these 2 derivations will be built:
  /nix/store/6v0fhks9f9bwdapapzq5zdbkhgfxzvvb-cargo-vendor-dir.drv
  /nix/store/s1g37d8688pj597kbgq0jap6lq1s38bj-horae-clippy-0.1.0.drv