reproduce (this is a W=1 build):
        git checkout 6553a8f168fb7941ae73d39eccac64f3a2b9b399
        b4 shazam https://lore.kernel.org/r/20251105-b4-select-rust-fw-v2-1-156d9014ed3b@nvidia.com

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig