[Flaky Test] Microsoft.CodeAnalysis.CSharp.Scripting.UnitTests.InteractiveSessionTests.CompilationChain_NestedTypesClass

[dpoeschl]

https://ci.dot.net/job/dotnet_roslyn/job/master/job/linux_debug/426/testReport/junit/Microsoft.CodeAnalysis.CSharp.Scripting.UnitTests/InteractiveSessionTests/CompilationChain_NestedTypesClass/

MESSAGE:
Assert.Equal() Failure ↓ (pos 0) Expected: test Actual: Finished: Roslyn.Compilers.CSharp.Synt··· ↑ (pos 0)
+++++++++++++++++++
STACK TRACE:
at Microsoft.CodeAnalysis.CSharp.Scripting.UnitTests.InteractiveSessionTests.<CompilationChain_NestedTypesClass>d__1.MoveNext() in /mnt/j/workspace/dotnet_roslyn/master/linux_debug/src/Scripting/CSharpTest/InteractiveSessionTests.cs:line 58 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)

[dpoeschl]

Only the one hit so far, and it passed in the subsequent run.

[tmat]

There might be some output stream flushing needed. I vaguely remember CoreCLR on Linux have some different buffering behavior than on Windows.

[mavasani]

This test is failing consistently on #17856

https://ci.dot.net/job/dotnet_roslyn/job/master/job/ubuntu_14_debug_prtest/433/consoleFull#83915535f8aae81d-4bec-45a1-8770-9e05a4fee5ca

[CyrusNajmabadi]

Also failing here: https://ci.dot.net/job/dotnet_roslyn/job/master/job/windows_release_unit64_prtest/3552/

[CyrusNajmabadi]

@tmat This has been assigned to you to look at: #17694

Microsoft.CodeAnalysis.CSharp.Scripting.UnitTests.InteractiveSessionTests.CompilationChain_NestedTypesClass
Has been causing lots of issues for many PRs. Please take a look.