these 6 derivations will be built:
  /nix/store/8q5yf2ygyjrhf0p3zxb7wvh1ba44zjyq-iets-0.1.0.drv
  /nix/store/zzxwcdkaknf17g3kibn9ll6ddfv7hw63-closure-info.drv
  /nix/store/yhkpzi6dk294g8wikdi41nm1rxb4xa7i-test-script.drv
  /nix/store/2rb6zisk3hybpj42najfjfmy0v85nnb1-driverConfiguration.json.drv
  /nix/store/3msmb4k49m7asw9frpw3d0vf80amix0f-nixos-test-driver-iets-cachetest.drv
  /nix/store/n2b2ad2amril7b4k3903j5rqvb7swa3k-container-test-run-iets-cachetest.drv