these 5 derivations will be built:
  /nix/store/r8ndakrq5fq9b6g5x290l182z9i703i5-closure-info.drv
  /nix/store/z2fzpl8vmn7qhsckvwx8h69y3wrpialj-test-script.drv
  /nix/store/qs38zjmr3745nid9mscd088x56r3w1cg-driverConfiguration.json.drv
  /nix/store/2sx5pq7a8hfbhjgq36nilljncrivn6qn-nixos-test-driver-iets-cachetest.drv
  /nix/store/4q410vh8iyv3v9sh8l2wymlhhzm92n1x-container-test-run-iets-cachetest.drv