ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation failuring in CI

[jkotas]

    System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation [FAIL]
      Assert.True() Failure
      Expected: True
      Actual:   False
      Stack Trace:
        /_/src/libraries/System.Diagnostics.Process/tests/ProcessWaitingTests.cs(729,0): at System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation()

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1390683
Build error leg or test failing: System.Runtime.Tests.WorkItemExecution
Pull request: https://github.com/dotnet/runtime.git/pull/127263

Error Message

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

{
  "ErrorMessage": "ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation [FAIL]",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1390683
Error message validated: [ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation [FAIL]]
Result validation: ❌ Known issue did not match with the provided build.
Validation performed at: 4/22/2026 4:09:14 PM UTC

Report

Summary

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

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1390683
Error message validated: [ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation [FAIL]]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 4/22/2026 6:58:13 PM UTC

Report

Summary

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

Report

Build	Definition	Test	Pull Request
1391978	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#126972
1392037	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#126904
1392027	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127301
1391843	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127114
1391949	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#126124
1391939	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127117
1391910	dotnet/runtime	System.Diagnostics.Tests.SafeProcessHandleTests.WaitForExitOrKill_ProcessDoesNotExit_KillsAndReturns	#126520
1391894	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127251
1391696	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#125180
1391593	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127293
1391544	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127195
1391435	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127290
1391423	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127289
1391414	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127228
1391396	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127288
1391391	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127263
1391281	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127213
1391257	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127073
1391236	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127074
1391231	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127043
1390683	dotnet/runtime	System.Diagnostics.Tests.ProcessWaitingTests.ProcessSafeHandle_WaitForExitOrKillOnCancellationAsync_KillsOnCancellation	#127263

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
21	21	21

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[adamsitnik]

Known issue did not match with the provided build.

@jkotas fyi

[vcsjones]

There was an extra space between KillsOnCancellation and [FAIL] in the error message pattern.