`-bash /usr/bin/libremakepkg
    |-bash /usr/bin/librechroot -r /home/build/pkgbuild/ufo2000:/startdir_host -r /home/build/pkgbuild/ufo2000:/srcdest_host -n 64 -l build -N run /chrootbuild false -s --noconfirm -L
    |   `-systemd-nspawn -q -D /btrfs/64/build --register=no --bind=/var/cache/pacman/pkg/ --bind-ro=/home/build/pkgbuild/ufo2000:/startdir_host --bind-ro=/home/build/pkgbuild/ufo2000:/srcdest_host --private-network -- /chrootbuild false -s --noconfirm -L
    |       `-chrootbuild /chrootbuild false -s --noconfirm -L
    |           `-sudo -u builduser makepkg -s --noconfirm -L -e
    |               `-makepkg /usr/bin/makepkg -s --noconfirm -L -e