these 6 derivations will be built:
  /nix/store/grv9m4wmblz1a35fl9p66cn8pw6c6pad-iets-0.1.0.drv
  /nix/store/s2flz1k0gmwnqa1anm98d2ivsc0f7px1-closure-info.drv
  /nix/store/zam05x9xzr5zshyh36m7mdrrpkz6lglq-test-script.drv
  /nix/store/drpk3vnpfqpl63ykgrzylxdyxzn9fz2h-driverConfiguration.json.drv
  /nix/store/2pywyjxdwzp4igjay8pb48zl2ynh7ayh-nixos-test-driver-iets-cachetest.drv
  /nix/store/91dm2pl48zjqmfhibmng049hhdyiw3rc-container-test-run-iets-cachetest.drv