these 4 derivations will be built:
  /nix/store/7bjza9griyxzdrhpfzq511w139cfipl7-test-script.drv
  /nix/store/7a0ymkhvqya10zhm76djs9slc3p3zlj6-driverConfiguration.json.drv
  /nix/store/0b5qay75lvv23zbmrrp1s0fzc1qqhhj4-nixos-test-driver-iets-cachetest.drv
  /nix/store/ng7a79cby9jyqyfqmf3jmdjnym2w3g90-container-test-run-iets-cachetest.drv