these 6 derivations will be built:
  /nix/store/7aizim903q93kmscya093w4i9yhyafp5-iets-0.1.0.drv
  /nix/store/xdwg3r5zw1jlm59kmn3ndyrmp3s7p1fj-closure-info.drv
  /nix/store/172a5q8x167jns587dkkdpd6q7p4dahb-test-script.drv
  /nix/store/c2y9rbjcn4l4gpq0d5ymp471ixa3p61n-driverConfiguration.json.drv
  /nix/store/3pwspvpy8vl4gv785k7jvn4wrs9ykz7h-nixos-test-driver-iets-cachetest.drv
  /nix/store/28pz8r05rjflnnzgbrr8dq5zv4yb9jjf-container-test-run-iets-cachetest.drv