these 6 derivations will be built:
  /nix/store/qwg7ri39bi01gn11fj8iqzfzm0wxn7wn-iets-0.1.0.drv
  /nix/store/a3lj9cqyr7mn4h87rfnhri6fyfc6rw30-closure-info.drv
  /nix/store/vjw1dqvsfnwszm0k7q6r882nyy4vcg7h-test-script.drv
  /nix/store/dx5rshl1kfsi3lbkskws05jldw31lyja-driverConfiguration.json.drv
  /nix/store/zfmmg2s5kjlm6ahlwqf1s3bsnqnkvdb9-nixos-test-driver-iets-cachetest.drv
  /nix/store/lhcijrlzm5q6cbj6ankv2gif3l5b09hk-container-test-run-iets-cachetest.drv