Compiler panic when .emit_docs in build.zig is combined with a bad @import

[verdog]

Zig Version

0.11.0-dev.137+e40c38d25

Steps to Reproduce and Observed Behavior

Make a zig project with these files:

build.zig

const std = @import("std");

pub fn build(b: *std.build.Builder) void {
    const target = b.standardTargetOptions(.{});
    const mode = b.standardReleaseOptions();

    const exe = b.addExecutable("main", "src/main.zig");
    exe.emit_docs = .emit; // boom
    exe.setTarget(target);
    exe.setMainPkgPath("./src");

    exe.setBuildMode(mode);
    exe.install();
}

src/main.zig

const Nothing = @import("none"); // this doesn't exist

pub fn main() !void {}

And run zig build:

⇒  zig build
thread 26970 panic: attempt to unwrap error: PackageNotFound
Unable to dump stack trace: debug info stripped
error: main...
error: The following command terminated unexpectedly:
/opt/zig/zig-linux-x86_64-0.11.0-dev.137+e40c38d25/zig build-exe /tmp/rep/src/main.zig -femit-docs --cache-dir /tmp/rep/zig-cache --global-cache-dir /home/josh/.cache/zig --name main --main-pkg-path /tmp/rep/src --enable-cache 
error: the following build command failed with exit code 6:
/tmp/rep/zig-cache/o/f6b591257cb6359f87ccd16bf93f70bb/build /opt/zig/zig-linux-x86_64-0.11.0-dev.137+e40c38d25/zig /tmp/rep /tmp/rep/zig-cache /home/josh/.cache/zig

This does not happen when the .emit_docs line in build.zig is removed.

Expected Behavior

The compiler should not crash.

[orhun]

I just experienced the same and I would like to work on fixing this if the expected behavior is made clear. Do we only want the compiler to not crash and possibly show an error message that the import doesn't exist?