these 6 derivations will be built:
  /nix/store/8bx4sxi1gmxwb5dprh5np3s4klcxjzh1-iets-0.1.0.drv
  /nix/store/0i5f6xl6jy7brg2zj19573pvqn833jfb-closure-info.drv
  /nix/store/mjzsiphsh1hykrvqgmyi7hz7q4qb7kxc-test-script.drv
  /nix/store/771mk535f7rllysmd8bcs6p1ipkwdq06-driverConfiguration.json.drv
  /nix/store/17pxkw1pwxk9acfbnkasrwyixi73ggbi-nixos-test-driver-iets-grpc-e2e.drv
  /nix/store/flc5f6n5axsi1d65c2khfpkvh3zpm14b-container-test-run-iets-grpc-e2e.drv