these 4 derivations will be built:
  /nix/store/m04qch52kk8a6zdrr7cjx3kjsbhxk9l4-test-script.drv
  /nix/store/s425vzbyfqljmlzrslhlq62a1fr7idky-driverConfiguration.json.drv
  /nix/store/yxlxm6hvcdlypcghg0qmbzs4cyh4ldyh-nixos-test-driver-iets-cachetest.drv
  /nix/store/jhyisn6apgip6q1basbi80w3dvfi9kpr-container-test-run-iets-cachetest.drv