[ci-scan] Build break: Mono AOT compile of JIT.Generics_ro fails with recursive/invalid generic instantiation on linux-x64 MiniF [Content truncated due to length]

[github-actions]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1558665
Build error leg or test failing: linux-x64 Release AllSubsets_Mono_MiniFullAot_RuntimeTests minifullaot - AOT compile CoreCLR tests (JIT.Generics_ro.dll)

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

The Mono AOT compile step (aot-compile.proj) fails while precompiling JIT.Generics_ro.dll on the linux-x64 Release AllSubsets_Mono_MiniFullAot_RuntimeTests minifullaot leg of runtime-extra-platforms (definition 154). The corerun-driven AOT pass emits over a thousand Failed to load methodspec errors rooted in recursive/invalid generic instantiations, then the MSBuild Exec reports failure:

EXEC : Failed to load methodspec 0x2b0003fa due to Could not find method 'VerifyA0A1A2A3NotInlinedGenericStatic' due to a type load error : Could not set up parent class, due to: Generic Type Definition failed to init, due to: Could not set up parent class, due to: Generic Type Definition failed to init, due to: Recursive type definition detected JitTest_Generics_Coverage_chaos65204782cs.A0A1`1 ... [/__w/1/s/src/mono/msbuild/aot-compile.proj]
/__w/1/s/src/mono/msbuild/aot-compile.proj(19,9): error MSB3077: The command "/__w/1/s/artifacts/tests/coreclr/linux.x64.Release/Tests/Core_Root/corerun /__w/1/s/artifacts/tests/coreclr/linux.x64.Release/JIT/Generics/JIT.Generics_ro/JIT.Generics_ro.dll" exited with return value 0, but errors were detected during execution. ExitCode was set to -1.
    1154 Error(s)
Build failed with exit code 1. Check errors above.

The failure is persistent: it reproduces across the entire scanned ~25-build window (all builds failed) and in the follow-up build 1560207. True origin likely predates the scanned window.

Error Message

{
  "ErrorMessage": "JIT/Generics/JIT.Generics_ro/JIT.Generics_ro.dll\" exited with return value 0, but errors were detected during execution. ExitCode was set to -1.",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Agentic workflow metadata (ci-failure-scan)

Workflow artifact: ci-failure-scan
Artifact kind: kbe-verification
Verified match count: 2 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.

Generated by CI Outer-Loop Failure Scanner · opus48 · 496.5 AIC · ⌖ 18.1 AIC · ⊞ 20.7K · ◷

Report

Build	Repository	Step Name	Console log	Pull Request
1577512	dotnet/runtime	AOT compile CoreCLR tests	Log
1576725	dotnet/runtime	AOT compile CoreCLR tests	Log	#133011
1576204	dotnet/runtime	AOT compile CoreCLR tests	Log
1575978	dotnet/runtime	AOT compile CoreCLR tests	Log
1575514	dotnet/runtime	AOT compile CoreCLR tests	Log
1574641	dotnet/runtime	AOT compile CoreCLR tests	Log
1574376	dotnet/runtime	AOT compile CoreCLR tests	Log
1574239	dotnet/runtime	AOT compile CoreCLR tests	Log
1574096	dotnet/runtime	AOT compile CoreCLR tests	Log
1574051	dotnet/runtime	AOT compile CoreCLR tests	Log
1573862	dotnet/runtime	AOT compile CoreCLR tests	Log
1573602	dotnet/runtime	AOT compile CoreCLR tests	Log
1573540	dotnet/runtime	AOT compile CoreCLR tests	Log
1573426	dotnet/runtime	AOT compile CoreCLR tests	Log	#130050
1573117	dotnet/runtime	AOT compile CoreCLR tests	Log
1572439	dotnet/runtime	AOT compile CoreCLR tests	Log	#132887
1572010	dotnet/runtime	AOT compile CoreCLR tests	Log
1571812	dotnet/runtime	AOT compile CoreCLR tests	Log
1571246	dotnet/runtime	AOT compile CoreCLR tests	Log
1569903	dotnet/runtime	AOT compile CoreCLR tests	Log
1569716	dotnet/runtime	AOT compile CoreCLR tests	Log
1569119	dotnet/runtime	AOT compile CoreCLR tests	Log
1567956	dotnet/runtime	AOT compile CoreCLR tests	Log
1567845	dotnet/runtime	AOT compile CoreCLR tests	Log
1567484	dotnet/runtime	AOT compile CoreCLR tests	Log
1566865	dotnet/runtime	AOT compile CoreCLR tests	Log	#132744
1566331	dotnet/runtime	AOT compile CoreCLR tests	Log
1566157	dotnet/runtime	AOT compile CoreCLR tests	Log
1565612	dotnet/runtime	AOT compile CoreCLR tests	Log
1564499	dotnet/runtime	AOT compile CoreCLR tests	Log
1564198	dotnet/runtime	AOT compile CoreCLR tests	Log
1564078	dotnet/runtime	AOT compile CoreCLR tests	Log
1563879	dotnet/runtime	AOT compile CoreCLR tests	Log
1563837	dotnet/runtime	AOT compile CoreCLR tests	Log
1563727	dotnet/runtime	AOT compile CoreCLR tests	Log
1563501	dotnet/runtime	AOT compile CoreCLR tests	Log
1563399	dotnet/runtime	AOT compile CoreCLR tests	Log
1563009	dotnet/runtime	AOT compile CoreCLR tests	Log
1562158	dotnet/runtime	AOT compile CoreCLR tests	Log	#132608
1562481	dotnet/runtime	AOT compile CoreCLR tests	Log	#132489
1561887	dotnet/runtime	AOT compile CoreCLR tests	Log
1561700	dotnet/runtime	AOT compile CoreCLR tests	Log
1561263	dotnet/runtime	AOT compile CoreCLR tests	Log
1560409	dotnet/runtime	AOT compile CoreCLR tests	Log

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
3	23	44

[steveisok]

Duplicate of #132942

Will be "fixed" by #133039