these 6 derivations will be built:
  /nix/store/6gs1c4zhd1wnb08vkhza76zdis3p11p0-iets-0.1.0.drv
  /nix/store/n3abljfbxb6k4hc48kvs2syl2qk8jsf2-closure-info.drv
  /nix/store/n90m3lpz53zq95jcg1ljj7zs51adli9b-test-script.drv
  /nix/store/y1vmxy5ppglqmmvipzq6n7nwzngmrhpi-driverConfiguration.json.drv
  /nix/store/nh44kskqlpzd02zhhmplf16jic8szwfy-nixos-test-driver-iets-cachetest.drv
  /nix/store/cjj2rcyx7lacbm0afnbb18dynrs5747s-container-test-run-iets-cachetest.drv