these 5 derivations will be built:
  /nix/store/7pvidnlh61p1dr0ykfjcx81grimiafb7-Cargo.toml.drv
  /nix/store/hyzvjwk70d4hpmpq81frmh5gbrgrvldd-Cargo.toml.drv
  /nix/store/sgb6gm5x2pxz2lv6hgsb6gqn9bg54z4n-source.drv
  /nix/store/6dn2qs9kgpf9acp85clasxgbak03dbk3-herdr-eternal-deps-0.1.0.drv
  /nix/store/rng34rdg2m79j1qryb7yai0jddfficys-herdr-eternal-clippy-0.1.0.drv