these 6 derivations will be built:
  /nix/store/ijpjyihdh320nwknpgknf4bn958x1bnz-iets-0.1.0.drv
  /nix/store/aigfhcvir6wywskp13b2bql0rc6byapz-closure-info.drv
  /nix/store/i52z1gds9sjsx8mhvkal99hsn9652rrk-test-script.drv
  /nix/store/6szikv5hiw1pi52ln44hcjfvrfgdkm3z-driverConfiguration.json.drv
  /nix/store/1dk7248gp62vp8ckjx60sj6k8g4bvfqn-nixos-test-driver-iets-cachetest.drv
  /nix/store/pi3xlb9byfl7yzsfz9h3hlxp60fi1gvz-container-test-run-iets-cachetest.drv