[ci-scan] Test failure: System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_Listen [Content truncated due to length]

[github-actions]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1593787
Build error leg or test failing: windows-x64 Release TestReadyToRun_Libraries-System.Net.Sockets.Tests

KBE authoring guidance (ci-failure-scan)

• Error Details is for readers. Paste the full exception, stack trace, or build error excerpt so the failure is understandable without opening the raw log.
• Build Analysis parses only the single JSON block under Error Message.
• ErrorMessage is a case-sensitive ordinal String.Contains substring copied verbatim from the failing log.
• Set BuildRetry to true only for a clear infrastructure retry case. ExcludeConsoleLog disables Helix console-log scanning.

Error Details

[FAIL] System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy(useAsync: True)
System.Net.Sockets.SocketException : An existing connection was forcibly closed by the remote host.
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource<System.Net.Sockets.Socket>.GetResult(Int16 token)
   at System.Threading.Tasks.ValueTask`1.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state)
--- End of stack trace from previous location ---
   at System.Runtime.CompilerServices.RuntimeAsyncTaskContinuation.GetResult[T](Task task, Byte& result)
   at System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy(Boolean useAsync) in /_/src/libraries/System.Net.Sockets/tests/FunctionalTests/Accept.cs:line 527
--- End of stack trace from previous location ---

Observed in the TestReadyToRun_Libraries legs of runtime-coreclr crossgen2 (def 124, build 1593787) and reproduced in the following build 1594001 (windows-x64 and linux-x64 legs), so the failure is stable across builds.

Error Message

{
  "ErrorMessage": [
    "System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy(useAsync: True)",
    "System.Net.Sockets.SocketException : An existing connection was forcibly closed by the remote host."
  ],
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Agentic workflow metadata (ci-failure-scan)

Workflow artifact: ci-failure-scan
Artifact kind: kbe-verification
Verified match count: 1 hits in failure.log

---

Filed by ci-failure-scan (detection only). ci-failure-fix walks open [ci-scan] KBEs and either opens a small fix PR or comments here to loop in owners — it never disables the test.

Note

This issue was generated by an AI agent (GitHub Copilot / ci-failure-scan workflow).

Generated by CI Outer-Loop Failure Scanner · opus48 · 923.9 AIC · ⌖ 12.5 AIC · ⊞ 19.7K · ◷

Report

Build	Repository	Test	Pull Request
1594346	dotnet/runtime	System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy	#133800
1594338	dotnet/runtime	System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy	#133606
1594333	dotnet/runtime	System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy
1594281	dotnet/runtime	System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy	#133628
1594266	dotnet/runtime	System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy	#133793
1594251	dotnet/runtime	System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy	#130050
1594067	dotnet/runtime	System.Net.Sockets.Tests.AcceptDualStackResetTests.Accept_DualStackListener_PeerImmediatelyResets_ListenerStaysHealthy

Summary

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