these 4 derivations will be built:
  /nix/store/yvnkw34mifpm64485jaf3ggxh9zzphrc-test-script.drv
  /nix/store/g7kwxvxbhzpdbh8qwkrd6735y1051fz0-driverConfiguration.json.drv
  /nix/store/z2hziq213xdb9k67d6sqi2a2afdj2wwh-nixos-test-driver-iets-cachetest.drv
  /nix/store/fyakx3rsnc9252sqr9mdcq70dnmps5y0-container-test-run-iets-cachetest.drv