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[ci-scan] Test failure: System.Net.WebSockets.Tests.WebSocketKeepAliveTests.WebSocketServer_NoUserReadOrWrite_SendsPingAndReadsPongResponse #133374
Description
Build Information
Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586034
Build error leg or test failing: net11.0-osx-Debug-arm64-coreclr_checked-OSX.26.Arm64.Open - System.Net.WebSockets.Tests
Pull request: #133361
KBE authoring guidance (ci-failure-scan)
Error Detailsis for readers. The assertion and stack trace are included below so the failure is understandable without opening the raw log.- Build Analysis parses only the JSON block under
Error Message. ErrorMessageentries are case-sensitive ordinalString.Containssubstrings copied verbatim from the failing log.BuildRetryis false because this is a recurring test failure rather than a clear infrastructure retry case.
Error Details
System.Net.WebSockets.Tests.WebSocketKeepAliveTests.WebSocketServer_NoUserReadOrWrite_SendsPingAndReadsPongResponse [FAIL]
Assert.Equal() Failure: Values differ
Expected: Aborted
Actual: Open
at System.Net.WebSockets.Tests.WebSocketKeepAliveTests.WebSocketServer_NoUserReadOrWrite_SendsPingAndReadsPongResponse() in /_/src/libraries/System.Net.WebSockets/tests/WebSocketKeepAliveTests.cs:line 156
--- End of stack trace from previous location ---
This recurred after #108298 was closed. That predecessor covered browser/Wasm on Linux, while this occurrence is macOS arm64 CoreCLR.
Error Message
{
"ErrorMessage": [
"System.Net.WebSockets.Tests.WebSocketKeepAliveTests",
"Assert.Equal() Failure: Values differ",
"Expected: Aborted",
"Actual: Open"
],
"ErrorPattern": "",
"BuildRetry": false,
"ExcludeConsoleLog": false
}Agentic workflow metadata (ci-failure-scan)
Workflow artifact: ci-failure-scan
Artifact kind: kbe-verification
Verified match count: 1 hit in the failed test result
Note
This issue was generated by GitHub Copilot.
Known issue validation
Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1586034
Error message validated: [System.Net.WebSockets.Tests.WebSocketKeepAliveTests.WebSocketServer_NoUserReadOrWrite_SendsPingAndReadsPongResponse Assert.Equal() Failure: Values differ Expected: Aborted Actual: Open]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 9/7/2026 6:15:41 PM UTC
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 4 | 13 |
Known issue validation
Build: 🔎
Result validation:
Validation performed at: 9/19/2026 4:25:39 AM UTC
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 4 | 13 |
Report
Summary
| 24-Hour Hit Count | 7-Day Hit Count | 1-Month Count |
|---|---|---|
| 0 | 9 | 30 |
Activity
dotnet-policy-service commentedon Sep 7, 2026
Tagging subscribers to this area: @karelz, @dotnet/ncl
See info in area-owners.md if you want to be subscribed.
jkotas commentedon Sep 19, 2026
Hit the same failure pattern in different test WebSocketKeepAliveTests (#134224):
I am generalizing the pattern match so that it covers all WebSocketKeepAliveTests.