these 6 derivations will be built:
  /nix/store/kj7v2gpzpgwkf6cc6z2i0rl4d2apyyy6-iets-0.1.0.drv
  /nix/store/vxmqvvwd75y29a8xbalh30y3vbl42q1r-closure-info.drv
  /nix/store/r5rigzkylrir3s7lljmabg4mglrqmbay-test-script.drv
  /nix/store/xbfy6qrzp7rz2vs6g5j41slcvq11z5qc-driverConfiguration.json.drv
  /nix/store/445v3zymv29ka2059kn995glzxcjiv9f-nixos-test-driver-iets-cachetest.drv
  /nix/store/fvadjz0n1z1p49r06m5xaw7n7p2nkw8r-container-test-run-iets-cachetest.drv