reproduce (this is a W=1 build):
        git checkout 28bb48c4cb34f65a9aa602142e76e1426da31293
        b4 shazam https://lore.kernel.org/r/20250325-ptr-as-ptr-v7-7-87ab452147b9@gmail.com
        # 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 rustfmtcheck