these 6 derivations will be built:
  /nix/store/8bx4sxi1gmxwb5dprh5np3s4klcxjzh1-iets-0.1.0.drv
  /nix/store/kf4pa3jc7wvc9mjayv0k3sa1zi9qsjvq-closure-info.drv
  /nix/store/cyl82a9ghlk1lfwkjcw87h57gznl2m4d-test-script.drv
  /nix/store/4gyr9x1rgnm51rx543d078mlijlkvs5j-driverConfiguration.json.drv
  /nix/store/3casfjn8nikdmx65g6kq8ah0j42rw04p-nixos-test-driver-iets-cachetest.drv
  /nix/store/gr5ync9rxz294bnfc334igy00cyb8a9q-container-test-run-iets-cachetest.drv