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{
"ErrorMessage": "",
"ErrorPattern": "Work item (Microsoft\\.Extensions\\.DependencyInjection\\.ExternalContainers\\.Tests|Microsoft\\.Extensions\\.Hosting\\.Unit\\.Tests|System\\.Diagnostics\\.TraceSource\\.Config\\.Tests|System\\.Reflection\\.Emit\\.ILGeneration\\.Tests|System\\.Reflection\\.Emit\\.Tests|System\\.Reflection\\.Metadata\\.Tests|System\\.Security\\.Cryptography\\.Tests|Microsoft\\.Bcl\\.Cryptography\\.Tests|Microsoft\\.Bcl\\.Memory\\.Tests) in job [0-9a-f-]+ has failed\\. \\[/Users/runner/[^\\]]*sendtohelixhelp\\.proj\\]",
"BuildRetry": false,
"ExcludeConsoleLog": true
}
Summary
Multiple Helix work items fail on maccatalyst CoreCLR Release (both x64 and arm64) and tvos-arm64 CoreCLR/Mono Release, including the tvos-arm64 device queue OSX.15.Amd64.AppleTV.Open. Work items crash without producing individual test results (Build Analysis reports DeadLetter or BadExit).
Note: This issue uses timeline ErrorPattern matching because Helix console logs for this build expired. Once a fresh build reproduces this failure, update with specific error text from the Helix console log and set ExcludeConsoleLog to false.
Update (2026-06-17, build 1468533): added baseservices-exceptions, Exceptions, Microsoft.Bcl.Cryptography.Tests, and Microsoft.Bcl.Memory.Tests to the ErrorPattern; these recur on the tvos-arm64 OSX.15.Amd64.AppleTV.Open device queue (same crash family) but were not previously attributed by Build Analysis.
Update (2026-07-07): narrowed the ErrorPattern to Apple mobile CoreCLR library legs only. The previous pattern matched Work item <name> in job .* has failed on any leg, so it attributed unrelated desktop failures. The generic CoreCLR runtime-test suite names Exceptions and baseservices-exceptions run on every platform through src/tests/Common/helixpublishwitharcade.proj and matched desktop Linux and Windows runtime-test legs (for example build 1494680 on Windows and build 1495630 on Linux). The remaining library work items also run on all platforms. The pattern now requires the macOS runner path /Users/runner/... and the library helix project src/libraries/sendtohelixhelp.proj, which excludes Linux (/__w/) and Windows (D:\a\) hosts and the runtime-test project. Exceptions and baseservices-exceptions are dropped because they only appear on helixpublishwitharcade.proj, which cannot be distinguished from osx-x64 desktop runtime tests on a single log line. If tvos-arm64 runtime-test crashes need attribution, match a mobile-specific crash signature from the Helix console log instead.
Note
This issue was filed with the assistance of GitHub Copilot.
Known issue validation
Build: 🔎https://dev.azure.com/dnceng-public/public/_build/results?buildId=1496248 Error message validated:[Work item (Microsoft\.Extensions\.DependencyInjection\.ExternalContainers\.Tests|Microsoft\.Extensions\.Hosting\.Unit\.Tests|System\.Diagnostics\.TraceSource\.Config\.Tests|System\.Reflection\.Emit\.ILGeneration\.Tests|System\.Reflection\.Emit\.Tests|System\.Reflection\.Metadata\.Tests|System\.Security\.Cryptography\.Tests|Microsoft\.Bcl\.Cryptography\.Tests|Microsoft\.Bcl\.Memory\.Tests) in job [0-9a-f-]+ has failed\. \[/Users/runner/[^\]]*sendtohelixhelp\.proj\]] Result validation: ✅ Known issue matched with the provided build. Validation performed at: 7/7/2026 12:34:07 PM UTC
Build Information
Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1362636
Build error leg or test failing: Microsoft.Extensions.DependencyInjection.ExternalContainers.Tests.WorkItemExecution, Microsoft.Extensions.Hosting.Unit.Tests.WorkItemExecution, System.Diagnostics.TraceSource.Config.Tests.WorkItemExecution, System.Reflection.Emit.ILGeneration.Tests.WorkItemExecution, System.Reflection.Emit.Tests.WorkItemExecution, System.Reflection.Metadata.Tests.WorkItemExecution, System.Security.Cryptography.Tests.WorkItemExecution
Pull request: #125441
Affected CI jobs: build_MacCatalyst_x64_Release_AllSubsets_CoreCLR, build_maccatalyst_arm64_Release_AllSubsets_CoreCLR, build_tvos_arm64_Release_AllSubsets_CoreCLR, build_tvos_arm64_Release_AllSubsets_CoreCLR_RuntimeTests, build_tvos_arm64_Release_AllSubsets_Mono
Error Message
Fill the error message using step by step known issues guidance.
{ "ErrorMessage": "", "ErrorPattern": "Work item (Microsoft\\.Extensions\\.DependencyInjection\\.ExternalContainers\\.Tests|Microsoft\\.Extensions\\.Hosting\\.Unit\\.Tests|System\\.Diagnostics\\.TraceSource\\.Config\\.Tests|System\\.Reflection\\.Emit\\.ILGeneration\\.Tests|System\\.Reflection\\.Emit\\.Tests|System\\.Reflection\\.Metadata\\.Tests|System\\.Security\\.Cryptography\\.Tests|Microsoft\\.Bcl\\.Cryptography\\.Tests|Microsoft\\.Bcl\\.Memory\\.Tests) in job [0-9a-f-]+ has failed\\. \\[/Users/runner/[^\\]]*sendtohelixhelp\\.proj\\]", "BuildRetry": false, "ExcludeConsoleLog": true }Summary
Multiple Helix work items fail on maccatalyst CoreCLR Release (both x64 and arm64) and tvos-arm64 CoreCLR/Mono Release, including the tvos-arm64 device queue OSX.15.Amd64.AppleTV.Open. Work items crash without producing individual test results (Build Analysis reports
DeadLetterorBadExit).Affected work items:
Note: This issue uses timeline ErrorPattern matching because Helix console logs for this build expired. Once a fresh build reproduces this failure, update with specific error text from the Helix console log and set
ExcludeConsoleLogtofalse.Update (2026-06-17, build 1468533): added
baseservices-exceptions,Exceptions,Microsoft.Bcl.Cryptography.Tests, andMicrosoft.Bcl.Memory.Teststo the ErrorPattern; these recur on the tvos-arm64 OSX.15.Amd64.AppleTV.Open device queue (same crash family) but were not previously attributed by Build Analysis.Update (2026-07-07): narrowed the ErrorPattern to Apple mobile CoreCLR library legs only. The previous pattern matched
Work item <name> in job .* has failedon any leg, so it attributed unrelated desktop failures. The generic CoreCLR runtime-test suite namesExceptionsandbaseservices-exceptionsrun on every platform throughsrc/tests/Common/helixpublishwitharcade.projand matched desktop Linux and Windows runtime-test legs (for example build 1494680 on Windows and build 1495630 on Linux). The remaining library work items also run on all platforms. The pattern now requires the macOS runner path/Users/runner/...and the library helix projectsrc/libraries/sendtohelixhelp.proj, which excludes Linux (/__w/) and Windows (D:\a\) hosts and the runtime-test project.Exceptionsandbaseservices-exceptionsare dropped because they only appear onhelixpublishwitharcade.proj, which cannot be distinguished from osx-x64 desktop runtime tests on a single log line. If tvos-arm64 runtime-test crashes need attribution, match a mobile-specific crash signature from the Helix console log instead.Note
This issue was filed with the assistance of GitHub Copilot.
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1496248
Error message validated:
[Work item (Microsoft\.Extensions\.DependencyInjection\.ExternalContainers\.Tests|Microsoft\.Extensions\.Hosting\.Unit\.Tests|System\.Diagnostics\.TraceSource\.Config\.Tests|System\.Reflection\.Emit\.ILGeneration\.Tests|System\.Reflection\.Emit\.Tests|System\.Reflection\.Metadata\.Tests|System\.Security\.Cryptography\.Tests|Microsoft\.Bcl\.Cryptography\.Tests|Microsoft\.Bcl\.Memory\.Tests) in job [0-9a-f-]+ has failed\. \[/Users/runner/[^\]]*sendtohelixhelp\.proj\]]Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 7/7/2026 12:34:07 PM UTC
Report
Summary