reproduce (this is a W=1 build):
        git checkout fec50db7033ea478773b159e0e2efb135270e3b7
        b4 shazam https://lore.kernel.org/r/20240512183950.1982353-2-nmi@metaspace.dk
        # 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