these 4 derivations will be built:
  /nix/store/q8shsx9xpk96klcw766dkg2k3x8frsrn-test-script.drv
  /nix/store/nyksfz17ll2mr67j05slfc1xj8mbq0fv-driverConfiguration.json.drv
  /nix/store/x0822zljq4pg9s17ns6m06rcl9xplqz9-nixos-test-driver-iets-cachetest.drv
  /nix/store/zlyd5127zmwngdykpzjxm6gad7yrg0s9-container-test-run-iets-cachetest.drv