reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/Rust-for-Linux/linux/commit/80990d23b7c75687e06051a5ae69edb2e38f8ae6
        git remote add rust https://github.com/Rust-for-Linux/linux
        git fetch --no-tags rust rust-dev
        git checkout 80990d23b7c75687e06051a5ae69edb2e38f8ae6
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-18 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-18 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash