these 6 derivations will be built:
  /nix/store/qbq8mafp6706vvmmpvh2gwhfd379qypx-iets-0.1.0.drv
  /nix/store/35a37fhis9kw23ngqaq16l0wcfaabb6f-closure-info.drv
  /nix/store/1h86zc3qf2avpmjra1nf52iqqhjp4izg-test-script.drv
  /nix/store/vb1ydgaajijjxw85jr1h3za1kj2v87da-driverConfiguration.json.drv
  /nix/store/rp8rhi91jxkwcjykd1rdk9hjv9zz7dyh-nixos-test-driver-iets-cachetest.drv
  /nix/store/r4z4zaz3iaahxm3id97g3f8023caxr22-container-test-run-iets-cachetest.drv