these 6 derivations will be built:
  /nix/store/sh16gh8pp92zfwqmsqfcvla2vqsz5das-iets-0.1.0.drv
  /nix/store/7sh7350sw294w83yi3in3fk7df4glbrh-closure-info.drv
  /nix/store/g213rs0gk68mk81fj1pmhndahyhxpxaf-test-script.drv
  /nix/store/wxg5dnfl61war6gl5lwcmw0vzzg56pl2-driverConfiguration.json.drv
  /nix/store/67abqwcz861lirdp991l6sfirkvb1fd6-nixos-test-driver-iets-cachetest.drv
  /nix/store/ykycznqga22bxfjvmcr5bys0zgaj60ch-container-test-run-iets-cachetest.drv