these 4 derivations will be built:
  /nix/store/80yzqw45nji4vsrrq8gpvnyxc95qnpdw-vendor-cargo-deps.drv
  /nix/store/h8cf5ag4rsbp127nkmsllahi0ikgdwcb-source.drv
  /nix/store/8zf9m6g1lldrvd1lq78qh43lzxjb5xr2-tincd-deps-0.1.0.drv
  /nix/store/0xmjq59m4c3b99p993q1nz64iqz0hdc9-tincd-test-0.1.0.drv