these 4 derivations will be built:
  /nix/store/95fbawcmkjm4dqxnjjxqp12vzbrc3w5z-test-script.drv
  /nix/store/11g1mlb7kn3xi0gzm8y7xlam3922in23-driverConfiguration.json.drv
  /nix/store/zy8qqv0idd4f5p3m2xd0k7bz6dc71ims-nixos-test-driver-iets-cachetest.drv
  /nix/store/7fhmix51mf0fqgqag6j3fj5vsjji097x-container-test-run-iets-cachetest.drv