these 6 derivations will be built:
  /nix/store/mqfbns7fhvwgp2vqnafx66s9gy3gjwgc-iets-0.1.0.drv
  /nix/store/px6dq6zb0v3pmf6k5mm77c912djx4nx1-closure-info.drv
  /nix/store/0hj7yp5yfgdjy39cn1gzqg9fh6a6c1av-test-script.drv
  /nix/store/kldlmzdw3wn7wfmp1q5s1472zb1gsksx-driverConfiguration.json.drv
  /nix/store/gqvc5m4dd1wbk8ai3hcl636682fxjk1l-nixos-test-driver-iets-cachetest.drv
  /nix/store/5swxsc6fjkamnw3rxib0xyvbhscp424n-container-test-run-iets-cachetest.drv