these 6 derivations will be built:
  /nix/store/29rablpygyvdhgr22cc9al4c9w9zy97s-iets-0.1.0.drv
  /nix/store/7q5jh4g1qs8fi5d318x9v5dl6pdmcjw1-closure-info.drv
  /nix/store/z0krn071caidlyq5ivq3gcqg0gk5b5qw-test-script.drv
  /nix/store/97888lw4zg85dd7p5j48d56r9m54isws-driverConfiguration.json.drv
  /nix/store/l71r327fw9hfaixz8gp67n15ix7g4b19-nixos-test-driver-iets-grpc-e2e.drv
  /nix/store/l1cn7iirl5lmf5k6iw3x8implp5j7xxj-container-test-run-iets-grpc-e2e.drv