these 5 derivations will be built:
  /nix/store/ah5hrz8k8427n4fcksdd83im4674vxz5-Cargo.toml.drv
  /nix/store/qva7xsfcqrh9aazaw4x7zvsrff4z1xim-Cargo.toml.drv
  /nix/store/kkn5mg6a4cdjd2k75namb4y23iv6k5z8-source.drv
  /nix/store/4ivyr0sggla44ccj2ndgnz7vqw9dkgrq-harmonia-deps-3.2.0.drv
  /nix/store/1ramphaf3j24msyq8ssh7yh3j66x205p-harmonia-clippy-3.2.0.drv