these 6 derivations will be built:
  /nix/store/svz5yrcshvadi7prm0pfl7bxp21glfqf-iets-0.1.0.drv
  /nix/store/7hcvi1iaj529x1g2i1wdz15nzz5zv7cn-closure-info.drv
  /nix/store/rs5bq4zwvvf81i4jii6x5zff6nlxgp2v-test-script.drv
  /nix/store/kg57hwm3c1gb0hb9q88x9wrprqciarlb-driverConfiguration.json.drv
  /nix/store/nqx408f0mdrk4551lgpkscz759xf3wln-nixos-test-driver-iets-cachetest.drv
  /nix/store/m1c9vb08vhxwacnd5kzfd97fkm0lz4sk-container-test-run-iets-cachetest.drv