these 2 derivations will be built:
  /nix/store/9fk91yvjl0dr23lwykiwfkblbz1zqrw1-rootfs-ubuntu-26_04.drv
  /nix/store/lx7llr65hda50h9lw0wllr2w1fi7dkwy-container-test-ubuntu-26-04-existing-group-members.drv