these 6 derivations will be built:
  /nix/store/qs6z6ng746n4k230ddnkjl4qrzxzfb70-iets-0.1.0.drv
  /nix/store/ri8r0jd46xhs0j5vcpfm1abwc8rpwvzh-closure-info.drv
  /nix/store/s9m1xmnw4zc87v48x38hqn1gj93lks6c-test-script.drv
  /nix/store/d3g1w098l3mqzml97qfr5l70y0nnf6b8-driverConfiguration.json.drv
  /nix/store/fhjg4aikjkwdfpfc3r17xpm69z41ajic-nixos-test-driver-iets-cachetest.drv
  /nix/store/5qvfgvw8ajglb363hfbgl6iqlh8pbmkl-container-test-run-iets-cachetest.drv