these 6 derivations will be built:
  /nix/store/fk8spr0prc1c35yf2bmchnnk9xq6ji0f-iets-0.1.0.drv
  /nix/store/9c3qp6lmiy6mklm6kgcc0fiis44clgif-closure-info.drv
  /nix/store/yxf1m42rvhgvajyffi6xxhhavjbx9r1x-test-script.drv
  /nix/store/yp5mmp0bd4gwsngqlly0a2qddcwmpqyd-driverConfiguration.json.drv
  /nix/store/jrzvfh8hkc6nlqzsk3bl0pccy7bb0vy9-nixos-test-driver-iets-cachetest.drv
  /nix/store/x17hs12rf2xapy7gi3a3fw4xqq5rxgc5-container-test-run-iets-cachetest.drv