reproduce (this is a W=1 build):
        # https://github.com/AsahiLinux/linux/commit/3d0f470e38db1811b62840d17fa3ea69f6747247
        git remote add asahilinux https://github.com/AsahiLinux/linux
        git fetch --no-tags asahilinux asahi-wip
        git checkout 3d0f470e38db1811b62840d17fa3ea69f6747247
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash CLIPPY=1 rustdoc