reproduce (this is a W=1 build):
        git remote add linuxtv-media-pending https://git.linuxtv.org/media-ci/media-pending.git
        git fetch --no-tags linuxtv-media-pending next
        git checkout c5ddd03bc5c4ac92703060001d8912cacb3c2765
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash