llvm dev - Dec 2021 - How to precisely reproduce the buildbot fail in local?

Hi,

I have a patch that caused several buildbot fails in a lit test. The test passed
with my local setup. Surprisingly, it passed even I used the same commands with
the bot.


Here is one of the failed bot:
https://lab.llvm.org/buildbot#builders/110/builds/8880
Here are steps I tried (used the identical command copy + paste from the bot):
$ cmake -G Ninja ../llvm/llvm -DCMAKE_BUILD_TYPE=Release
-DLLVM_ENABLE_ASSERTIONS=True
'-DLLVM_LIT_ARGS='"'"'-v'"'"''
-DCMAKE_INSTALL_PREFIX=../stage1.install -DLLVM_ENABLE_ASSERTIONS=ON
'-DCMAKE_C_FLAGS='"'"'-march=broadwell'"'"''
'-DCMAKE_CXX_FLAGS='"'"'-march=broadwell'"'"''
'-DLLVM_TARGETS_TO_BUILD='"'"'X86'"'"''
'-DLLVM_ENABLE_PROJECTS=llvm;clang'
$ ninja check-all

Any idea how can I reproduce it locally?

Thanks
Phoebe

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