these 4 derivations will be built:
  /nix/store/9kb9784fxhbarlaw9hc9drwc9rg2giw1-test-script.drv
  /nix/store/m7acd9njf74w035bcv0vd3k0srna37dy-driverConfiguration.json.drv
  /nix/store/17vxz3v7wpzfbgrsbrklii1m9ysxzfb8-nixos-test-driver-iets-cachetest.drv
  /nix/store/709nxg28p6vj82jk05ll5rnd7nzq8z9x-container-test-run-iets-cachetest.drv