==> Creating chroot for [extra-staging-with-build-support] (i486)...
  -> Deleting chroot copy 'root'...
==> Creating install root at /var/lib/archbuild/extra-staging-with-build-support-i486/root
==> Installing packages to /var/lib/archbuild/extra-staging-with-build-support-i486/root
pacman: unrecognized option '--disable-sandbox'
==> ERROR: Failed to install packages to new root
==> ERROR: Failed to install all packages
==> ERROR: Aborting...
used straw: :with_build_support:clean_chroot:
build@euronuc-i486