these 6 derivations will be built:
  /nix/store/kih07a81zxd5fj4i2iajc23fpxck7l7k-iets-0.1.0.drv
  /nix/store/n3zhkgav1cnhyi0jjfvpdjqwd34j7kiq-closure-info.drv
  /nix/store/qibzvz1h6z8p0bpj9qg0ilg5i3xr18ai-test-script.drv
  /nix/store/pqkn33kzszhi4p0lpjxxrg1h1bddrvcp-driverConfiguration.json.drv
  /nix/store/k828wci0g5dxlirjn8wva2i1pyd26iqs-nixos-test-driver-iets-cachetest.drv
  /nix/store/p112jllzk43jyh6vn3qjbyszj2mzrsw0-container-test-run-iets-cachetest.drv