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

[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	Repository	Test	Pull Request
1504668	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#130393
1504520	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1504271	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#130539
1500955	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#120934
1498894	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#130341
1498774	dotnet/runtime	System.Runtime.Tests.WorkItemExecution
1498710	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#130312
1498520	dotnet/runtime	System.Runtime.Tests.WorkItemExecution	#128744
1496783	dotnet/runtime	System.Globalization.Tests.WorkItemExecution	#130168
1494308	dotnet/runtime	System.Net.Security.Unit.Tests.WorkItemExecution
1493305	dotnet/runtime	System.Xml.Linq.SDMSample.Tests.WorkItemExecution	#130168
1492827	dotnet/runtime	System.Resources.Reader.Tests.WorkItemExecution
1492684	dotnet/runtime	System.Net.WebClient.Tests.WorkItemExecution
1492589	dotnet/runtime	System.IO.Tests.WorkItemExecution
1492240	dotnet/runtime	System.Net.Mail.Unit.Tests.WorkItemExecution
1486312	dotnet/runtime	System.Composition.Hosting.Tests.WorkItemExecution
1485789	dotnet/runtime	System.ComponentModel.Tests.WorkItemExecution
1485187	dotnet/runtime	System.Collections.Tests.WorkItemExecution
1480312	dotnet/runtime	System.Drawing.Primitives.Tests.WorkItemExecution
1468533	dotnet/runtime	System.Threading.Overlapped.Tests.WorkItemExecution	#129514
1467678	dotnet/runtime	System.Xml.Linq.xNodeBuilder.Tests.WorkItemExecution
1465781	dotnet/runtime	System.ObjectModel.Tests.WorkItemExecution
1465808	dotnet/runtime	Exceptions.WorkItemExecution
1464480	dotnet/runtime	System.Data.Odbc.Tests.WorkItemExecution
1463443	dotnet/runtime	System.Runtime.Serialization.Formatters.Tests.WorkItemExecution	#128409

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	9	25

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