these 6 derivations will be built:
  /nix/store/ndl31qvjna29hgn1jng36014iphj03zz-iets-0.1.0.drv
  /nix/store/0abwlpc1rpj6fiqg2wpr2d2zvb57pdwc-closure-info.drv
  /nix/store/8qazxcvn21y13gwwa6cgjr0rp9imvi0a-test-script.drv
  /nix/store/lxvd14k5adfrsspx0b4ndvkkmg6a20mq-driverConfiguration.json.drv
  /nix/store/w6aym8mynm4xlay768qjh871ix6bpi31-nixos-test-driver-iets-cachetest.drv
  /nix/store/6j86g0am512l01gbjrx1cdyarywr2y89-container-test-run-iets-cachetest.drv