these 6 derivations will be built:
  /nix/store/kmnz54srl5xfqnidr2xfr913c10cvr4z-iets-0.1.0.drv
  /nix/store/qxg2j08r4aiq0gky93knhv8ql8nzv198-closure-info.drv
  /nix/store/fdgw570h1r7dv91fdgmlf2rbn4k4gfcn-test-script.drv
  /nix/store/h46s1d2a1d6yrq2i7hym0jgkc5qm46ls-driverConfiguration.json.drv
  /nix/store/189ci47fs25h9wkhl94gr6kxdgz8b1iv-nixos-test-driver-iets-cachetest.drv
  /nix/store/p67ajpvbjgh2xikmj0qcrbb81pm4djcj-container-test-run-iets-cachetest.drv