Error while building test-suite with SPEC CPU2017

I’m trying to build LLVM test-suite with SPEC CPU2017, but I’m getting the following error at the very last step of the build:

Error copying directory from “/usr/local/google/home/phosek/clang-llvm/llvm-test-suite/test-suite-externals/speccpu2017/benchspec/CPU/526.blender_r/data/all/input” to “/usr/local/google/home/phosek/clang-llvm/test-suite-build/External/SPEC/CFP2017rate/526.blender_r/run_train”.

I checked the SPEC CPU2017 source tree and benchspec/CPU/526.blender_r/data/all/input indeed doesn’t exist. I tried re-downloading the latest version (1.0.5) and doing a fresh installation, but I’m still missing that directory.

Is there else anything I’m missing or is this a bug in the test-suite build?