these 6 derivations will be built:
  /nix/store/gkamkqj89gwwzci434irlb2jx01sv39m-iets-0.1.0.drv
  /nix/store/mc4ma079hqxxbzppqc07fb62dvb4yhd3-closure-info.drv
  /nix/store/vlvv8c707whj4lg9dympxm2ka78ik1p6-test-script.drv
  /nix/store/ahgb3y17k75ipyh0jcirp7hb8qdkh2pa-driverConfiguration.json.drv
  /nix/store/2smbzj1q878kfgdkfpsr4d3dgwackl9q-nixos-test-driver-iets-cachetest.drv
  /nix/store/b3b7fyj9nqvdy3vd4gl0v94p5jwjl75w-container-test-run-iets-cachetest.drv