these 4 derivations will be built:
  /nix/store/lv0vknsza1ibbnzblrrcgqz4iw70z8vj-Cargo.toml.drv
  /nix/store/k4fzlccqman4xq6niw61lgkh8dikdgb2-source.drv
  /nix/store/nm6vdfijxg5da38qfn0lhyj0fjwm40fc-tincd-deps-0.1.0.drv
  /nix/store/mjj19asg244ls227bpkxhy359zzvjs2x-tincd-test-0.1.0.drv