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Mono iOS test failures with "The "AppleAppBuilderTask" task failed unexpectedly." in ProxyProjectForAOTOnHelix #127423

@jakobbotsch

Description

@jakobbotsch

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1396034
Build error leg or test failing: System.Runtime.Tests.WorkItemExecution
Pull request: #127336

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "The \"AppleAppBuilderTask\" task failed unexpectedly.",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1396034
Error message validated: [The "AppleAppBuilderTask" task failed unexpectedly.]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 4/25/2026 12:23:46 PM UTC

Report

Build Definition Test Pull Request
1401865 dotnet/runtime System.Runtime.Tests.WorkItemExecution #126841
1396034 dotnet/runtime System.Runtime.Tests.WorkItemExecution #127336

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
1 2 2

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    Known Build ErrorUse this to report build issues in the .NET Helix tabarea-Infrastructure-monoblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'untriagedNew issue has not been triaged by the area owner

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