C:\h\w\B56D09E0\w\AEE308FD\e>set COMPlus 
COMPlus_JitStress=1
COMPlus_TieredCompilation=1

C:\h\w\B56D09E0\w\AEE308FD\e>call RunTests.cmd --runtime-path C:\h\w\B56D09E0\p 
----- start Mon 06/28/2021  7:54:02.16 ===============  To repro directly: ===================================================== 
pushd C:\h\w\B56D09E0\w\AEE308FD\e\
"C:\h\w\B56D09E0\p\dotnet.exe" exec --runtimeconfig System.Formats.Asn1.Tests.runtimeconfig.json --depsfile System.Formats.Asn1.Tests.deps.json xunit.console.dll System.Formats.Asn1.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing 
popd
===========================================================================================================

C:\h\w\B56D09E0\w\AEE308FD\e>"C:\h\w\B56D09E0\p\dotnet.exe" exec --runtimeconfig System.Formats.Asn1.Tests.runtimeconfig.json --depsfile System.Formats.Asn1.Tests.deps.json xunit.console.dll System.Formats.Asn1.Tests.dll -xml testResults.xml -nologo -nocolor -notrait category=IgnoreForCI -notrait category=OuterLoop -notrait category=failing  
  Discovering: System.Formats.Asn1.Tests (method display = ClassAndMethod, method display options = None)
  Discovered:  System.Formats.Asn1.Tests (found 527 test cases)
  Starting:    System.Formats.Asn1.Tests (parallel test collections = on, max threads = 4)

Assert failure(PID 4124 [0x0000101c], Thread: 5784 [0x1698]): Assertion failed '!isSizeMistmatch || isStackAllocCandidate' in 'System.Formats.Asn1.Tests.Writer.SimpleWriterTests:DisposeDefaultScope()' during 'Determine first cold block' (IL size 16)

    File: D:\workspace\_work\1\s\src\coreclr\jit\morphblock.cpp Line: 227
    Image: C:\h\w\B56D09E0\p\dotnet.exe

----- end Mon 06/28/2021  7:54:17.03 ----- exit code -1073740286 ----------------------------------------------------------