reproduce (this is a W=1 build):
        git checkout 0c5928deada15a8d075516e6e0d9ee19011bb000
        b4 shazam https://lore.kernel.org/r/20241219-rust-lockdep-v2-1-f65308fbc5ca@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 CLIPPY=1 rustdoc