these 4 derivations will be built:
  /nix/store/vcw0aiv8f5izq55xb0hqbvifn8szi247-test-script.drv
  /nix/store/0a8aqaaq8gjr5mhmq7xpj8yfjaxp86jj-driverConfiguration.json.drv
  /nix/store/ykx69xlsqwz5aczxz4rn2mpiq1pib0zq-nixos-test-driver-iets-cachetest.drv
  /nix/store/5wgrywczjfb21c2pd9xribgv5lyn34hf-container-test-run-iets-cachetest.drv