System.Net.Mail.Tests.SmtpClientTest.TestZeroTimeout hangs in CI

[jakobbotsch]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1053873
Build error leg or test failing: System.Net.Mail.Functional.Tests.WorkItemExecution
Pull request: #116074

Error Message

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

{
  "ErrorMessage": ["[Long Running Test] 'System.Net.Mail.Tests.SmtpClientTest.TestZeroTimeout'", "Process terminated.", "TestZeroTimeout"],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1053873
Error message validated: [[Long Running Test] 'System.Net.Mail.Tests.SmtpClientTest.TestZeroTimeout' Process terminated. TestZeroTimeout]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 5/30/2025 9:29:27 AM UTC

Report

Build	Definition	Test	Pull Request
1054314	dotnet/runtime	System.Net.Mail.Functional.Tests.WorkItemExecution	#116099
1053873	dotnet/runtime	System.Net.Mail.Functional.Tests.WorkItemExecution	#116074

Summary

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

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[jakobbotsch]

Looks like this was already fixed by #116062 (both PR runs are from before that PR merged)