these 4 derivations will be built:
  /nix/store/ywjgg1p5ylvvw3amwsgsm2449bzj49f7-test-script.drv
  /nix/store/hrz6pbx9as4mk76rs3dr7kz9m3hnjds0-driverConfiguration.json.drv
  /nix/store/gx1xmk4p19vaixa44lilj55lv6dcpv8a-nixos-test-driver-iets-cachetest.drv
  /nix/store/73d22y4wqjqlcrxag9zjrs7d5gsavy23-container-test-run-iets-cachetest.drv