these 6 derivations will be built:
  /nix/store/wcw6w09368irk64ag3nsmbbyc9gy7s84-iets-0.1.0.drv
  /nix/store/1cdq1i14kj6nbqmrsjz4s3k262mdw1d7-closure-info.drv
  /nix/store/h3w8gi6y5cq3ry6kj7fxf34qlfbskp7r-test-script.drv
  /nix/store/is85biynzlyhqvnxh2vy5fwf0iw2m3vb-driverConfiguration.json.drv
  /nix/store/6cpzxy3rlhjlnznv03y4039008h1mgg3-nixos-test-driver-iets-cachetest.drv
  /nix/store/a9711wyb4d6g3hx3adjq3lfxrjnm1ybm-container-test-run-iets-cachetest.drv