these 6 derivations will be built:
  /nix/store/l71h95lnka6i4hi4x41qf0sy4n500720-iets-0.1.0.drv
  /nix/store/1ycchcpi0mawxfnmpcfc5za2rsmfx8yw-closure-info.drv
  /nix/store/2dnw4mqk7wxcsz7l1z8yap1pzw823jsq-test-script.drv
  /nix/store/g19w7vk2z0qvq5mz68f51waik1pvypjv-driverConfiguration.json.drv
  /nix/store/6hs07icvaiqqhv6sgp3zm67p6igwjffk-nixos-test-driver-iets-cachetest.drv
  /nix/store/1bsk7dy3bgf1qmgj9iw9ia7yxf62kqyl-container-test-run-iets-cachetest.drv