[ci-scan] Test failure: Runtime_133715.TestEntryPoint on Mono interpreter

[jkoritzinsky]

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1597845
Build error leg or test failing: mono osx x64 Release - global::Runtime_133715.TestEntryPoint()
Pull request: #132927

KBE authoring guidance (ci-failure-scan)

• Error Details is for readers. The full failure excerpt is included below.
• Build Analysis parses only the single JSON block under Error Message.
• ErrorMessage is a case-sensitive ordinal match copied verbatim from the failing log.
• BuildRetry is false because this is a product test failure rather than an infrastructure retry failure.

Error Details

14:43:58.981 Running test: global::Runtime_133715.TestEntryPoint()
Xunit.Sdk.ThrowsException: Assert.Throws() Failure: No exception was thrown
Expected: typeof(System.NullReferenceException)
   at Xunit.Assert.ThrowsImpl(Type exceptionType, Exception exception, Func`2 inspector) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/ExceptionAsserts.cs:line 506
   at Xunit.Assert.Throws[NullReferenceException](Func`1 testCode) in /_/src/arcade/src/Microsoft.DotNet.XUnitAssert/src/ExceptionAsserts.cs:line 153
   at Runtime_133715.Test[Int32]()
   at Runtime_133715.TestEntryPoint()
14:43:58.991 Failed test: global::Runtime_133715.TestEntryPoint()

Error Message

{
  "ErrorMessage": [
    "Running test: global::Runtime_133715.TestEntryPoint()",
    "Xunit.Sdk.ThrowsException: Assert.Throws() Failure: No exception was thrown"
  ],
  "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

Affected leg: Mono interpreter, macOS 15 x64, Release.

Console log: https://helixr1107v0xdeko0k025g8.blob.core.windows.net/dotnet-runtime-refs-pull-132927-merge-f2b10ee0333c4ed78c/Regression_ro_2/1/console.53d305ed.log?helixlogtype=result

The identical failure also occurred in unrelated PR #133976 on the same configuration. This regression test was introduced by the CoreCLR JIT fix in #133806; the current failure is Mono-interpreter-specific.

Note

This issue was created with GitHub Copilot assistance.

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1597845
Error message validated: [Running test: global::Runtime_133715.TestEntryPoint() Xunit.Sdk.ThrowsException: Assert.Throws() Failure: No exception was thrown]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 9/15/2026 9:17:11 PM UTC

Report

Build	Repository	Test	Pull Request
1599339	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134060
1599209	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134059
1599228	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#132448
1599030	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134049
1599007	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134039
1598961	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134037
1598938	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#132752
1598937	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134042
1598865	dotnet/runtime	global::Runtime_133715.TestEntryPoint()
1598852	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133877
1598756	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#132448
1598731	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134027
1598728	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134029
1598688	dotnet/runtime	global::Runtime_133715.TestEntryPoint()
1598671	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#130050
1598544	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133932
1598519	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#132448
1598513	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133834
1598493	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133995
1598457	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#134010
1598423	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133658
1598398	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133188
1598417	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133659
1598445	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#132346
1598405	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133662
1598206	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133993
1598135	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#132448
1598074	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133967
1598069	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133968
1598095	dotnet/runtime	global::Runtime_133715.TestEntryPoint()
1597981	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133547
1598031	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#133915
1597987	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#132981
1597845	dotnet/runtime	global::Runtime_133715.TestEntryPoint()	#132927

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
34	34	34

[dotnet-policy-service]

Tagging subscribers to this area: @vitek-karas, @BrzVlad, @kotlarmilos
See info in area-owners.md if you want to be subscribed.