these 6 derivations will be built:
  /nix/store/4sdj4jakwy4rsjhsdp0bsmbvi808zk0w-iets-0.1.0.drv
  /nix/store/lhzzwna6fi4l0sh9lbi0nf45mcahmgcd-closure-info.drv
  /nix/store/nigzjppmvvi97wbgc2xkmpx14s8vwv4x-test-script.drv
  /nix/store/y2237nnmcssfrfhgzf7d2whraprwjn17-driverConfiguration.json.drv
  /nix/store/h2pg7qn919jazixz2j5w2s8p41gn2df3-nixos-test-driver-iets-cachetest.drv
  /nix/store/4phjd1zgy72l0r6dssz44mf0j4kavdl6-container-test-run-iets-cachetest.drv