reproduce (this is a W=1 build):
        git checkout 0303584766b7bdb6564c7e8f13e0b59b6ef44984
        b4 shazam https://lore.kernel.org/r/20250625111133.698481-1-shankari.ak0208@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