these 6 derivations will be built:
  /nix/store/ca45n7l5gq4jwdhxwmbrlwkz0nyr30zf-iets-0.1.0.drv
  /nix/store/lgrrg6946i3ia1jrp9ysf7wjf6mvw324-closure-info.drv
  /nix/store/0kwyc4b47r4wwlzpmmrys0fvjydznn14-test-script.drv
  /nix/store/jljam19w4w54xgvxkm7qymb99j8q4418-driverConfiguration.json.drv
  /nix/store/5cjqswihyvvnyg5jdsdgqiz9gwichapk-nixos-test-driver-iets-cachetest.drv
  /nix/store/nyk6yvh0zvxcvjyjrxznzmcmbq2gvcgr-container-test-run-iets-cachetest.drv