these 2 derivations will be built:
  /nix/store/4ggyzydjjg29yrnhfn1ddlh3i64d4i4c-cargo-vendor-dir.drv
  /nix/store/j7c69lhf0g56pa5mjvlziqm8jakjl1lh-horae-clippy-0.1.0.drv