these 6 derivations will be built:
  /nix/store/xvcjfan9pg7d74iv01frkcd47im5sg90-iets-0.1.0.drv
  /nix/store/yai7qaslyr6k1giv2ry64flj6a30cm20-closure-info.drv
  /nix/store/2bj839wzx1wm73g5dhpc0qz5ggd50cga-test-script.drv
  /nix/store/d059gik8c2f1r5zrn96h3yhhyhpv215k-driverConfiguration.json.drv
  /nix/store/fkxw4gj4fgvyaphd9mflc89s20wynyq0-nixos-test-driver-iets-cachetest.drv
  /nix/store/0mv1701myxp1iz4wp0zip13ychzxdvyg-container-test-run-iets-cachetest.drv