these 6 derivations will be built:
  /nix/store/j91lqkimnq0dfchy07xi4whpn2imqzcb-iets-0.1.0.drv
  /nix/store/936fd55mz3mjl6wvh4yvazl0flcsa950-closure-info.drv
  /nix/store/gg6vs58hfxpjrzzcvwamlsp0hppff6kq-test-script.drv
  /nix/store/hivi7wzpxvl682gckylyi7h3kls5szms-driverConfiguration.json.drv
  /nix/store/nrkf850fsz7ix2i1yfrqwfxmsnf7pa5h-nixos-test-driver-iets-grpc-e2e.drv
  /nix/store/hf4plhh3igf7qnmlp69xhf0fpmp9kg4x-container-test-run-iets-grpc-e2e.drv