these 4 derivations will be built:
  /nix/store/h2syagahbmn7sn5v5clvbcwcd9j92nm5-test-script.drv
  /nix/store/i1jvm9v901ykjhrxdx5jjpz84dbjckcp-driverConfiguration.json.drv
  /nix/store/bdr9crg7cxfbpqs5i1nrb8k1piny6z6q-nixos-test-driver-iets-cachetest.drv
  /nix/store/2rniqymha3297zc32b8c640dzwxp93lz-container-test-run-iets-cachetest.drv