these 2 derivations will be built:
  /nix/store/7fzx3d2qpqg2svs9dzkfcas7clasbqbc-cargo-vendor-dir.drv
  /nix/store/2dpf5vbk8kazfmvqmdmddj1xjzrzfgfl-horae-clippy-0.1.0.drv