these 6 derivations will be built:
  /nix/store/a15hha3dn8hcary4fiikb1w4x9158s0r-iets-0.1.0.drv
  /nix/store/d5qy0kf5178npypdb6g43gma2ijrmvi9-closure-info.drv
  /nix/store/50dzpijzmcr4d5schppfr87qmm6lrwm2-test-script.drv
  /nix/store/pxhvb82wsm0lzrwjjq7s0k1jw7sacvhg-driverConfiguration.json.drv
  /nix/store/7g1n0973sdnmafhkbaip648i4jl8j55b-nixos-test-driver-iets-cachetest.drv
  /nix/store/6nfh3iw6xznrkhsgh5h5m4q41svfxm5j-container-test-run-iets-cachetest.drv