these 7 derivations will be built:
  /nix/store/13zbrxjyq5n3swy6p81bp1z6g8bw9da0-source.drv
  /nix/store/5s54jjigrzyldbmvblj6fn98xv4gg0vl-cargo-package-ed25519-dalek-3.0.0-pre.7.drv
  /nix/store/79lhs0s4mcx7xwyi38j4dgz8mqa0kr73-cargo-package-libc-0.2.191.drv
  /nix/store/yjkrdj6jspn9ahf0hxlk4rg7rfs7vkbq-vendor-registry.drv
  /nix/store/1vqn0nawzf6525kgmklrbnllx5njbfiv-vendor-cargo-deps.drv
  /nix/store/z55ndfgl86986z9bp7mm8cxaq2px581m-tincd-deps-0.1.0.drv
  /nix/store/rzy4kmj2lpgpyb05ap4rf6v3b7vdw9aq-tincd-test-0.1.0.drv