these 6 derivations will be built:
  /nix/store/gyw6n2i6q8b69rwz2fidbacxhca69jfs-iets-0.1.0.drv
  /nix/store/4w67xkjw2kimn84rsq69wxjx6svv18wb-closure-info.drv
  /nix/store/3y941a9drk9zrm5yjdxny12xq2m9a4cl-test-script.drv
  /nix/store/ig1xk5gxriqficgf4khmpkb7sci0dg2w-driverConfiguration.json.drv
  /nix/store/si764vy30wvhn39xrxjcmknz7jf5jky3-nixos-test-driver-iets-cachetest.drv
  /nix/store/6k9r4mnrqzhjgx8gf2xpy2ipir4w0cw4-container-test-run-iets-cachetest.drv