these 2 derivations will be built:
  /nix/store/l6r6xxnai9q9alwkwrl9si35qjr2kw0c-cargo-vendor-dir.drv
  /nix/store/w9g7m6fiynnz1g1v1hf1m0r6lz40vmyc-horae-clippy-0.1.0.drv