[ci-scan] Hang: maccatalyst-arm64 CoreCLR runtime test work items time out after 10800 seconds

[github-actions]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1574051
Build error leg or test failing: maccatalyst-arm64 Release AllSubsets_CoreCLR_RuntimeTests - CoreCLR runtime test work items (CoreMangLib, GC, jit64_3, Loader, Methodical_, Regression_) hang and are killed at the 3-hour Helix timeout (exit code 70)

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

On runtime-extra-platforms (definition 154, required gate), every CoreCLR runtime-test work item on the maccatalyst-arm64 Release AllSubsets_CoreCLR_RuntimeTests leg hangs and is force-killed when the Helix work item reaches its 3-hour (10800 second) execution limit, reporting exit code 70. The same leg fails in this manner across multiple consecutive builds (e.g. 1567845, 1569716, source 1574051, follow-up 1574376), taking down CoreMangLib, GC, jit64_3, Loader, Methodical_d1/do/ro, Regression_7 and other work items in the leg.

[02:59:27] fail: Run timed out after 10800 seconds
[02:59:29] dbug: error: attach failed: no such process
[02:59:29] dbug: Could not find pid in mtouch output.

Error Message

{
  "ErrorMessage": "fail: Run timed out after 10800 seconds",
  "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

Generated by CI Outer-Loop Failure Scanner · opus48 · 598.1 AIC · ⌖ 11.7 AIC · ⊞ 20.7K · ◷

Report

Build	Repository	Test	Pull Request
1577135	dotnet/runtime	jit64_3.WorkItemExecution
1576120	dotnet/runtime	jit64_3.WorkItemExecution	#132997
1575978	dotnet/runtime	jit64_1.WorkItemExecution
1575596	dotnet/runtime	Regression_o_1.WorkItemExecution
1574779	dotnet/runtime	Regression_PdbOnly_r_4.WorkItemExecution	#132740

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
4	5	5

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