https://github.com/dotnet/runtime/blob/release/6.0/docs/workflow/testing/mono/testing.md
I do as the testing.md steps.
./build.cmd -excludemonofailures release/debug
../../dotnet.cmd msbuild /t:RunCoreClrTests /p:CoreClrTestConfig=Debug /p:LibrariesTestConfig=Release /p:Configuration=Release mono.proj
the first command can built tests success, but the second command to run test always run failed:

what steps may be left to build, is there any detail document?