reproduce (this is a W=1 build):
        git checkout a2cc6ff5ec8f91bc463fd3b0c26b61166a07eb11
        b4 shazam https://lore.kernel.org/r/20250405-vec_extend-v2-1-e4a85af43cb3@nvidia.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 CLIPPY=1 rustdoc