these 2 derivations will be built:
  /nix/store/13rlx9vsnf7g9wkaa2mdcmjn80n9dln8-cargo-vendor-dir.drv
  /nix/store/7bypalciqb0l5g5wvx777787gd8n8xb6-horae-clippy-0.1.0.drv