R2R known test failure

[BruceForstall]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=310510&view=results
Build error leg or test failing: Regressions\coreclr\GitHub_54719\test54719\test54719.cmd
Pull request: #87588

Error Message

Fill the error message using step by step known issues guidance.

{
 "ErrorMessage": "at Internal.TypeSystem.CastingHelper.CanCastToInternal",
 "ErrorPattern": "",
 "BuildRetry": false,
 "ExcludeConsoleLog": false
}

#87663

Report

Build	Definition	Test	Pull Request
311865	dotnet/runtime	Regressions/coreclr/GitHub_54719/test54719/test54719.sh
311712	dotnet/runtime	PayloadGroup0.WorkItemExecution
311746	dotnet/runtime	Regressions/coreclr/GitHub_54719/test54719/test54719.sh
311711	dotnet/runtime	Regressions/coreclr/GitHub_45037/test45037/test45037.sh
311597	dotnet/runtime	Regressions/coreclr/GitHub_54719/test54719/test54719.sh
311578	dotnet/runtime	Regressions/coreclr/GitHub_45037/test45037/test45037.sh
311497	dotnet/runtime	Regressions/coreclr/GitHub_54719/test54719/test54719.sh
311363	dotnet/runtime	Regressions/coreclr/GitHub_45037/test45037/test45037.sh
311324	dotnet/runtime	Regressions/coreclr/GitHub_54719/test54719/test54719.sh
311319	dotnet/runtime	PayloadGroup0.WorkItemExecution
311318	dotnet/runtime	Regressions/coreclr/GitHub_45037/test45037/test45037.sh
311307	dotnet/runtime	Regressions/coreclr/GitHub_54719/test54719/test54719.sh
311305	dotnet/runtime	Regressions/coreclr/GitHub_54719/test54719/test54719.sh
311190	dotnet/runtime	Regressions/coreclr/GitHub_45037/test45037/test45037.sh
310909	dotnet/runtime	PayloadGroup0.WorkItemExecution
310908	dotnet/runtime	Regressions/coreclr/GitHub_54719/test54719/test54719.sh
310889	dotnet/runtime	PayloadGroup0.WorkItemExecution	#87241
310769	dotnet/runtime	PayloadGroup0.WorkItemExecution	#87241
310510	dotnet/runtime	PayloadGroup0.WorkItemExecution	#87588
309817	dotnet/runtime	PayloadGroup0.WorkItemExecution
309621	dotnet/runtime	PayloadGroup0.WorkItemExecution
309581	dotnet/runtime	PayloadGroup0.WorkItemExecution	#87421
309485	dotnet/runtime	PayloadGroup0.WorkItemExecution
309277	dotnet/runtime	PayloadGroup0.WorkItemExecution	#87438

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
6	24	24

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=310510
Result validation: ✅ Known issue matched with the provided build.

[EgorBo]

Arguments of that CanCastToInternal:

thisType: SignatureTypeVariable
otherType: {[ConsoleApp1]IB}

Stack:

>	ILCompiler.TypeSystem.dll!Internal.TypeSystem.CastingHelper.CanCastToInternal(Internal.TypeSystem.TypeDesc thisType, Internal.TypeSystem.TypeDesc otherType, Internal.TypeSystem.CastingHelper.StackOverflowProtect protect) Line 179	C#
 	ILCompiler.TypeSystem.dll!Internal.TypeSystem.CastingHelper.CanCastTo(Internal.TypeSystem.TypeDesc thisType, Internal.TypeSystem.TypeDesc otherType) Line 17	C#
 	ILCompiler.TypeSystem.dll!Internal.TypeSystem.CastingHelper.IsCompatibleWith(Internal.TypeSystem.TypeDesc thisType, Internal.TypeSystem.TypeDesc otherType) Line 142	C#
 	ILCompiler.TypeSystem.dll!Internal.TypeSystem.MethodSignature.Equals(Internal.TypeSystem.MethodSignature otherSignature, bool allowCovariantReturn) Line 238	C#
 	ILCompiler.TypeSystem.dll!Internal.TypeSystem.MethodSignature.EqualsWithCovariantReturnType(Internal.TypeSystem.MethodSignature otherSignature) Line 222	C#
 	ILCompiler.ReadyToRun.dll!ILCompiler.DependencyAnalysis.ReadyToRun.TypeValidationChecker.ValidateTypeWorker(Internal.TypeSystem.Ecma.EcmaType type) Line 317	C#
 	ILCompiler.ReadyToRun.dll!ILCompiler.DependencyAnalysis.ReadyToRun.TypeValidationChecker.ValidateType.AnonymousMethod__0() Line 95	C#
 	System.Private.CoreLib.dll!System.Threading.Tasks.Task<System.Threading.Tasks.Task<bool>>.InnerInvoke() Line 501	C#
 	System.Private.CoreLib.dll!System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(System.Threading.Thread threadPoolThread, System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) Line 270	C#
 	System.Private.CoreLib.dll!System.Threading.Tasks.Task.ExecuteWithThreadLocal(ref System.Threading.Tasks.Task currentTaskSlot, System.Threading.Thread threadPoolThread) Line 2349	C#
 	System.Private.CoreLib.dll!System.Threading.ThreadPoolWorkQueue.Dispatch() Line 924	C#
 	System.Private.CoreLib.dll!System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart() Line 58	C#

[EgorBo]

I guess it could be #85743 cc @davidwrighton

[davidwrighton]

Thank you for bringing this to my attention, I'mll take a look today