iOS tests failing with OSError: [Errno 28] No space left on device

[MihaZupan]

Build

https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1337140

E.g. https://helixr1107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-125526-merge-c11096c024db465987/iOS.Device.ParallelForEachAsync.Test.Attempt.3/f3035da5-b542-43ef-9283-a42707d78008.log

Build leg reported

iOS.Device.Aot.Test.WorkItemExecution

Pull Request

dotnet/runtime#125526

Known issue core information

Fill out the known issue JSON section by following the step by step documentation on how to create a known issue

 {
    "ErrorMessage" : "OSError: [Errno 28] No space left on device",
    "BuildRetry": false,
    "ErrorPattern": "",
    "ExcludeConsoleLog": false
 }

@dotnet/dnceng

Release Note Category

• Feature changes/additions
• Bug fixes
• Internal Infrastructure Improvements

Release Note Description

Additional information about the issue reported

No response

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1337140
Error message validated: [OSError: [Errno 28] No space left on device]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 3/16/2026 4:54:41 PM UTC

Report

Build	Definition	Test	Pull Request
1339217	dotnet/runtime	iOS.Device.Aot.Test.WorkItemExecution	dotnet/runtime#125512
1339128	dotnet/runtime	iOS.Device.ExportManagedSymbols.Test.WorkItemExecution	dotnet/runtime#125481
1338969	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	dotnet/runtime#125590
1338844	dotnet/runtime	iOS.Device.Aot.Test.WorkItemExecution	dotnet/runtime#124766
1338649	dotnet/runtime	iOS.Device.ExportManagedSymbols.Test.WorkItemExecution	dotnet/runtime#125636
1338630	dotnet/runtime	System.Runtime.Numerics.Tests.WorkItemExecution
1338601	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	dotnet/runtime#124716
1338323	dotnet/runtime	iOS.Device.ExportManagedSymbols.Test.WorkItemExecution	dotnet/runtime#125061
1338320	dotnet/runtime	iOS.Device.Aot.Test.WorkItemExecution
1338310	dotnet/runtime	iOS.Device.ExportManagedSymbols.Test.WorkItemExecution
1338018	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	dotnet/runtime#125633
1337971	dotnet/runtime	iOS.CoreCLR.Interpreter.Test.WorkItemExecution	dotnet/runtime#125471
1337926	dotnet/runtime	iOS.Device.Aot.Test.WorkItemExecution	dotnet/runtime#125616
1337940	dotnet/runtime	iOS.Device.ParallelForEachAsync.Test.WorkItemExecution	dotnet/runtime#124375

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	14	14