these 6 derivations will be built:
  /nix/store/ai04l7sxlidm08zgvnlragrg9zr3k4w5-iets-0.1.0.drv
  /nix/store/a78zz0cfwd2rqdzdkf4wc8wiy63zjl79-closure-info.drv
  /nix/store/xjn4fz4hagxzvyi93ca21gf7glb5d8mz-test-script.drv
  /nix/store/2bwnypn2wimakbkbgfw452ay55153gjj-driverConfiguration.json.drv
  /nix/store/pmn9ca8pkr6lgy0m2pqsvslia23h99zv-nixos-test-driver-iets-cachetest.drv
  /nix/store/3rcw02v7vr4gh8rv4lz6fzpfvwyi77i6-container-test-run-iets-cachetest.drv