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This changes the index parsing code to pass around CliUnstable instead of the bindeps bool to make it easier to check for multiple unstable options.
This changes CompileTarget to an enum to better differentiate when it is a JSON path versus when it is a target tuple. This should help ensure that the correct behavior is being used without constantly needing to check if the suffix is `.json`. This also adds an `CompileKind::add_target_arg` helper to centralize where the `--target` arg adding is done.
This adds the `-Z json-target-spec` CLI flag to assist with using custom `.json` target spec files. `rustc` recently switched so that it requires `-Z unstable-options` when using custom spec files (rust-lang/rust#151534). This can make it rather awkward to use spec files with cargo because it then requires setting RUSTFLAGS and RUSTDOCFLAGS to pass `-Zunstable-options`. It also ends up causing some confusing error messages. Now, using `--target` with `.json` extension files generates an error that explains you need `-Zjson-target-spec`. The only thing this flag does is disable that error, and automatically passes `-Zunstable-options` with the `--target` flag. This does not 100% cover json target spec files, because they can be placed in RUST_TARGET_PATH or the sysroot, and `rustc` will automatically search for them (without the `.json` extension in the `--target` arg). The user will just need to use RUSTFLAGS/RUSTDOCFLAGS in that situation (but I expect that to be rare). The majority of this change is changing `CompileTarget::new` to take a flag if `-Zjson-target-spec` is enabled, and then threading through all the places that call it. `CompileTarget::new` is responsible for generating an error if json is used without the Z flag.
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This adds the `-Z json-target-spec` CLI flag to assist with using custom `.json` target spec files. `rustc` recently switched so that it requires `-Z unstable-options` when using custom spec files (rust-lang/rust#151534). This can make it rather awkward to use spec files with cargo because it then requires setting RUSTFLAGS and RUSTDOCFLAGS to pass `-Zunstable-options`. It also ends up causing some confusing error messages. See the individual commits for more details. This ended up being a larger diff than I wanted. I'm not 100% certain this is worth it, but I think it significantly improves the experience using `.json` files, so I I'm leaning towards it. Testing can be done with `rustc` built from rust-lang/rust#151534 to ensure that everything passes after that PR (including setting `CARGO_RUN_BUILD_STD_TESTS=1`).
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Update cargo submodule 11 commits in efcd9f58636c1990393d495159045d9c35e43b8f..0f3a1e9099aecdf95f144e842d96dc1827c1985 2026-01-23 13:50:59 +0000 to 2026-01-27 20:14:45 +0000 - feat(lints): Add redundant_homepage lint (rust-lang/cargo#16561) - feat(lints): Add `non_*_case_features` (rust-lang/cargo#16560) - Update build_std::basic test to ensure index doesn't update (rust-lang/cargo#16559) - feat(lints): Add mutually exclusive `non_{kebab,snake}_case_packages` (rust-lang/cargo#16554) - fix(lints): Pluralize non_kebab_case_bins (rust-lang/cargo#16553) - Add -Z json-target-spec (rust-lang/cargo#16557) - feat(lint): Add redundant_readme lint (rust-lang/cargo#16552) - chore(deps): update msrv (rust-lang/cargo#16387) - tests: add regression test for --artifact-dir on stable (rust-lang/cargo#16541) - Don't check the specific build-std output (rust-lang/cargo#16551) - Fix build-std lto test to run on other platforms (rust-lang/cargo#16550)
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Update cargo submodule 11 commits in efcd9f58636c1990393d495159045d9c35e43b8f..0f3a1e9099aecdf95f144e842d96dc1827c1985 2026-01-23 13:50:59 +0000 to 2026-01-27 20:14:45 +0000 - feat(lints): Add redundant_homepage lint (rust-lang/cargo#16561) - feat(lints): Add `non_*_case_features` (rust-lang/cargo#16560) - Update build_std::basic test to ensure index doesn't update (rust-lang/cargo#16559) - feat(lints): Add mutually exclusive `non_{kebab,snake}_case_packages` (rust-lang/cargo#16554) - fix(lints): Pluralize non_kebab_case_bins (rust-lang/cargo#16553) - Add -Z json-target-spec (rust-lang/cargo#16557) - feat(lint): Add redundant_readme lint (rust-lang/cargo#16552) - chore(deps): update msrv (rust-lang/cargo#16387) - tests: add regression test for --artifact-dir on stable (rust-lang/cargo#16541) - Don't check the specific build-std output (rust-lang/cargo#16551) - Fix build-std lto test to run on other platforms (rust-lang/cargo#16550)
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Update cargo submodule 18 commits in efcd9f58636c1990393d495159045d9c35e43b8f..fe2f314aef06e688a9517da1ac0577bb1854d01f 2026-01-23 13:50:59 +0000 to 2026-01-30 21:52:01 +0000 - feat(lints): Add unused workspace dependency lint (rust-lang/cargo#16571) - docs: Remove redundant homepage link (rust-lang/cargo#16572) - refactor: Remove unused workspace dependencies (rust-lang/cargo#16573) - Re-downgrade curl-sys (rust-lang/cargo#16570) - docs(report): enhance man pages for `cargo report *` (rust-lang/cargo#16430) - fix(lints): Refine redundant metadata lints (rust-lang/cargo#16564) - Prevent `cargo init` in home directory (rust-lang/cargo#16566) - feat(lints): Add redundant_homepage lint (rust-lang/cargo#16561) - feat(lints): Add `non_*_case_features` (rust-lang/cargo#16560) - Update build_std::basic test to ensure index doesn't update (rust-lang/cargo#16559) - feat(lints): Add mutually exclusive `non_{kebab,snake}_case_packages` (rust-lang/cargo#16554) - fix(lints): Pluralize non_kebab_case_bins (rust-lang/cargo#16553) - Add -Z json-target-spec (rust-lang/cargo#16557) - feat(lint): Add redundant_readme lint (rust-lang/cargo#16552) - chore(deps): update msrv (rust-lang/cargo#16387) - tests: add regression test for --artifact-dir on stable (rust-lang/cargo#16541) - Don't check the specific build-std output (rust-lang/cargo#16551) - Fix build-std lto test to run on other platforms (rust-lang/cargo#16550)
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Update cargo submodule 18 commits in efcd9f58636c1990393d495159045d9c35e43b8f..fe2f314aef06e688a9517da1ac0577bb1854d01f 2026-01-23 13:50:59 +0000 to 2026-01-30 21:52:01 +0000 - feat(lints): Add unused workspace dependency lint (rust-lang/cargo#16571) - docs: Remove redundant homepage link (rust-lang/cargo#16572) - refactor: Remove unused workspace dependencies (rust-lang/cargo#16573) - Re-downgrade curl-sys (rust-lang/cargo#16570) - docs(report): enhance man pages for `cargo report *` (rust-lang/cargo#16430) - fix(lints): Refine redundant metadata lints (rust-lang/cargo#16564) - Prevent `cargo init` in home directory (rust-lang/cargo#16566) - feat(lints): Add redundant_homepage lint (rust-lang/cargo#16561) - feat(lints): Add `non_*_case_features` (rust-lang/cargo#16560) - Update build_std::basic test to ensure index doesn't update (rust-lang/cargo#16559) - feat(lints): Add mutually exclusive `non_{kebab,snake}_case_packages` (rust-lang/cargo#16554) - fix(lints): Pluralize non_kebab_case_bins (rust-lang/cargo#16553) - Add -Z json-target-spec (rust-lang/cargo#16557) - feat(lint): Add redundant_readme lint (rust-lang/cargo#16552) - chore(deps): update msrv (rust-lang/cargo#16387) - tests: add regression test for --artifact-dir on stable (rust-lang/cargo#16541) - Don't check the specific build-std output (rust-lang/cargo#16551) - Fix build-std lto test to run on other platforms (rust-lang/cargo#16550)
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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
Pkgsrc changes: * Update version & checksums, and adapt to new libc crate included. Upstream changes relative to 1.94.1: Version 1.95 (2026-04-16) ========================== Language -------- - [Stabilize `if let` guards on match arms] (rust-lang/rust#141295) - [`irrefutable_let_patterns` lint no longer lints on let chains] (rust-lang/rust#146832) - [Support importing path-segment keywords with renaming] (rust-lang/rust#146972) - [Stabilize inline assembly for PowerPC and PowerPC64] (rust-lang/rust#147996) - [const-eval: be more consistent in the behavior of padding during typed copies] (rust-lang/rust#148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.] (rust-lang/rust#150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module] (rust-lang/rust#150681) Compiler -------- - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary] (rust-lang/rust#147611) Platform Support ---------------- - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools] (rust-lang/rust#149962) - [Promote `aarch64-apple-tvos` to Tier 2] (rust-lang/rust#152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2] (rust-lang/rust#152021) - [Promote `aarch64-apple-watchos` to Tier 2] (rust-lang/rust#152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2] (rust-lang/rust#152021) - [Promote `aarch64-apple-visionos` to Tier 2] (rust-lang/rust#152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2] (rust-lang/rust#152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. https://doc.rust-lang.org/rustc/platform-support.html Libraries --------- - [`thread::scope`: document how join interacts with TLS destructors] (rust-lang/rust#149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default] (rust-lang/rust#152176) Stabilized APIs --------------- - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`] (https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`] (https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`] (https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`] (https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`] (https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`] (https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`] (https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`] (https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`] (https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`] (https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`] (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`] (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`] (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`] (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`] (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`] (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`] (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`] (https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`] (https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`] (https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`] (https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`] (https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`] (https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`] (https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`] (https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`] (https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`] (https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`] (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`] (https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) Cargo ----- - [docs(report): enhance man pages for `cargo report *`] (rust-lang/cargo#16430) Rustdoc ----- - [In search results, rank unstable items lower] (rust-lang/rust#149460) - [Add new "hide deprecated items" setting in rustdoc] (rust-lang/rust#151091) Compatibility Notes ------------------- - [Array coercions may now result in less inference constraints than before] (rust-lang/rust#140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.] (rust-lang/rust#148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait] (rust-lang/rust#149058) - [Check lifetime bounds of types mentioning only type parameters] (rust-lang/rust#149389) - [Report more visibility-related ambiguous import errors] (rust-lang/rust#149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls] (rust-lang/rust#149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing] (rust-lang/rust#150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant] (rust-lang/rust#150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC] (rust-lang/rust#123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes] (rust-lang/rust#151152) - [JSON target specs] (https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#150151] (rust-lang/rust#150151), [#151534] (rust-lang/rust#150151), and [rust-lang/cargo#16557] (rust-lang/cargo#16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked] (rust-lang/rust#153764) Internal Changes ---------------- These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](rust-lang/rust#150722)
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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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this pull request
Apr 16, 2026
This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). 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This PR contains the following updates: | Package | Update | Change | |---|---|---| | [STABLE](https://redirect.github.com/rust-lang/rust) | minor | `1.94` → `1.95` | --- ### Release Notes <details> <summary>rust-lang/rust (STABLE)</summary> ### [`v1.95`](https://redirect.github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1950-2026-04-16) [Compare Source](https://redirect.github.com/rust-lang/rust/compare/1.94.0...1.95.0) \=========================== <a id="1.95-Language"></a> ## Language - [Stabilize `if let` guards on match arms](https://redirect.github.com/rust-lang/rust/pull/141295) - [`irrefutable_let_patterns` lint no longer lints on let chains](https://redirect.github.com/rust-lang/rust/pull/146832) - [Support importing path-segment keywords with renaming](https://redirect.github.com/rust-lang/rust/pull/146972) - [Stabilize inline assembly for PowerPC and PowerPC64](https://redirect.github.com/rust-lang/rust/pull/147996) - [const-eval: be more consistent in the behavior of padding during typed copies](https://redirect.github.com/rust-lang/rust/pull/148967) - [Const blocks are no longer evaluated to determine if expressions involving fallible operations can implicitly be constant-promoted.](https://redirect.github.com/rust-lang/rust/pull/150557). Expressions whose ability to implicitly be promoted would depend on the result of a const block are no longer implicitly promoted. - [Make operational semantics of pattern matching independent of crate and module](https://redirect.github.com/rust-lang/rust/pull/150681) <a id="1.95-Compiler"></a> ## Compiler - [Stabilize `--remap-path-scope` for controlling the scoping of how paths get remapped in the resulting binary](https://redirect.github.com/rust-lang/rust/pull/147611) <a id="1.95-Platform-Support"></a> ## Platform Support - [Promote `powerpc64-unknown-linux-musl` to Tier 2 with host tools](https://redirect.github.com/rust-lang/rust/pull/149962) - [Promote `aarch64-apple-tvos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-tvos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-watchos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) - [Promote `aarch64-apple-visionos-sim` to Tier 2](https://redirect.github.com/rust-lang/rust/pull/152021) Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. [platform-support-doc]: https://doc.rust-lang.org/rustc/platform-support.html <a id="1.95-Libraries"></a> ## Libraries - [`thread::scope`: document how join interacts with TLS destructors](https://redirect.github.com/rust-lang/rust/pull/149482) - [Speed up `str::contains` on aarch64 targets with `neon` target feature enabled by default](https://redirect.github.com/rust-lang/rust/pull/152176) <a id="1.95-Stabilized-APIs"></a> ## Stabilized APIs - [`MaybeUninit<[T; N]>: From<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3CMaybeUninit%3C%5BT;+N%5D%3E%3E-for-%5BMaybeUninit%3CT%3E;+N%5D) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsRef<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsRef%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>; N]>`](https://doc.rust-lang.org/beta/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`MaybeUninit<[T; N]>: AsMut<[MaybeUninit<T>]>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-AsMut%3C%5BMaybeUninit%3CT%3E%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`[MaybeUninit<T>; N]: From<MaybeUninit<[T; N]>>`](https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#impl-From%3C%5BMaybeUninit%3CT%3E;+N%5D%3E-for-MaybeUninit%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>; N]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E;+N%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T; N]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT;+N%5D%3E) - [`Cell<[T]>: AsRef<[Cell<T>]>`](https://doc.rust-lang.org/stable/std/cell/struct.Cell.html#impl-AsRef%3C%5BCell%3CT%3E%5D%3E-for-Cell%3C%5BT%5D%3E) - [`bool: TryFrom<{integer}>`](https://doc.rust-lang.org/stable/std/primitive.bool.html#impl-TryFrom%3Cu128%3E-for-bool) - [`AtomicPtr::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.update) - [`AtomicPtr::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicPtr.html#method.try_update) - [`AtomicBool::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.update) - [`AtomicBool::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicBool.html#method.try_update) - [`AtomicIn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.update) - [`AtomicIn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicIsize.html#method.try_update) - [`AtomicUn::update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.update) - [`AtomicUn::try_update`](https://doc.rust-lang.org/stable/std/sync/atomic/struct.AtomicUsize.html#method.try_update) - [`cfg_select!`](https://doc.rust-lang.org/stable/std/macro.cfg_select.html) - [`mod core::range`](https://doc.rust-lang.org/stable/core/range/index.html) - [`core::range::RangeInclusive`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusive.html) - [`core::range::RangeInclusiveIter`](https://doc.rust-lang.org/stable/core/range/struct.RangeInclusiveIter.html) - [`core::hint::cold_path`](https://doc.rust-lang.org/stable/core/hint/fn.cold_path.html) - [`<*const T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked) - [`<*mut T>::as_ref_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_ref_unchecked-1) - [`<*mut T>::as_mut_unchecked`](https://doc.rust-lang.org/stable/std/primitive.pointer.html#method.as_mut_unchecked) These previously stable APIs are now stable in const contexts: - [`fmt::from_fn`](https://doc.rust-lang.org/stable/std/fmt/fn.from_fn.html) - [`ControlFlow::is_break`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_break) - [`ControlFlow::is_continue`](https://doc.rust-lang.org/stable/core/ops/enum.ControlFlow.html#method.is_continue) <a id="1.95-Cargo"></a> ## Cargo - [docs(report): enhance man pages for `cargo report *`](https://redirect.github.com/rust-lang/cargo/pull/16430/)<a id="1.95-Rustdoc"></a> ## Rustdoc - [In search results, rank unstable items lower](https://redirect.github.com/rust-lang/rust/pull/149460) - [Add new "hide deprecated items" setting in rustdoc](https://redirect.github.com/rust-lang/rust/pull/151091) <a id="1.95-Compatibility-Notes"></a> ## Compatibility Notes - [Array coercions may now result in less inference constraints than before](https://redirect.github.com/rust-lang/rust/pull/140283) - Importing `$crate` without renaming, i.e. `use $crate::{self};`, is now no longer permitted due to stricter error checking for `self` imports. - [const-eval: be more consistent in the behavior of padding during typed copies.](https://redirect.github.com/rust-lang/rust/pull/148967) In very rare cases, this may cause compilation errors due to bytes from parts of a pointer ending up in the padding bytes of a `const` or `static`. - [A future-incompatibility warning lint `ambiguous_glob_imported_traits` is now reported when using an ambiguously glob imported trait](https://redirect.github.com/rust-lang/rust/pull/149058) - [Check lifetime bounds of types mentioning only type parameters](https://redirect.github.com/rust-lang/rust/pull/149389) - [Report more visibility-related ambiguous import errors](https://redirect.github.com/rust-lang/rust/pull/149596) - [Deprecate `Eq::assert_receiver_is_total_eq` and emit future compatibility warnings on manual impls](https://redirect.github.com/rust-lang/rust/pull/149978) - [powerpc64: Use the ELF ABI version set in target spec instead of guessing](https://redirect.github.com/rust-lang/rust/pull/150468) (fixes the ELF ABI used by the OpenBSD target) - Matching on a `#[non_exhaustive]` enum [now reads the discriminant, even if the enum has only one variant](https://redirect.github.com/rust-lang/rust/pull/150681). This can cause closures to capture values that they previously wouldn't. - `mut ref` and `mut ref mut` patterns, part of the unstable [Match Ergonomics 2024 RFC](https://redirect.github.com/rust-lang/rust/issues/123076), were accidentally allowed on stable within struct pattern field shorthand. These patterns are now correctly feature-gated as unstable in this position. - [Add future-compatibility warning for derive helper attributes which conflict with built-in attributes](https://redirect.github.com/rust-lang/rust/pull/151152) - [JSON target specs](https://doc.rust-lang.org/rustc/targets/custom.html) have been destabilized and now require `-Z unstable-options` to use. Previously, they could not be used without the standard library, which has no stable build mechanism. In preparation for the `build-std` project adding that support, JSON target specs are being proactively gated to ensure they remain unstable even if `build-std` is stabilized. Cargo now includes the `-Z json-target-spec` CLI flag to automatically pass `-Z unstable-options` to the compiler when needed. See [#​150151](https://redirect.github.com/rust-lang/rust/pull/150151), [#​151534](https://redirect.github.com/rust-lang/rust/pull/150151), and [rust-lang/cargo#16557](https://redirect.github.com/rust-lang/cargo/pull/16557). - [The arguments of `#[feature]` attributes on invalid targets are now checked](https://redirect.github.com/rust-lang/rust/issues/153764) <a id="1.95-Internal-Changes"></a> ## Internal Changes These changes do not affect any public interfaces of Rust, but they represent significant improvements to the performance or internals of rustc and related tools. - [Update to LLVM 22](https://redirect.github.com/rust-lang/rust/pull/150722) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - Every minute (`* * * * *`) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). View the [repository job log](https://developer.mend.io/github/gitext-rs/git-fixture). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My4xMjMuOCIsInVwZGF0ZWRJblZlciI6IjQzLjEyMy44IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119--> Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
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This adds the
-Z json-target-specCLI flag to assist with using custom.jsontarget spec files.rustcrecently switched so that it requires-Z unstable-optionswhen using custom spec files (rust-lang/rust#151534). This can make it rather awkward to use spec files with cargo because it then requires setting RUSTFLAGS and RUSTDOCFLAGS to pass-Zunstable-options. It also ends up causing some confusing error messages.See the individual commits for more details.
This ended up being a larger diff than I wanted. I'm not 100% certain this is worth it, but I think it significantly improves the experience using
.jsonfiles, so I I'm leaning towards it.How to test and review this PR?
Testing can be done with
rustcbuilt from rust-lang/rust#151534 to ensure that everything passes after that PR (including settingCARGO_RUN_BUILD_STD_TESTS=1).