these 4 derivations will be built:
  /nix/store/0bbp7iw1x7zdvq8lk21jrzs9rxdgc08v-Cargo.toml.drv
  /nix/store/mb95q7shm8y10zfiwj82czbhpwkmvnqa-source.drv
  /nix/store/yl9k80d9141hjjf8sqi2mpi8w35hk7f1-tincd-deps-0.1.0.drv
  /nix/store/fqhz4lxjn13m0jl4a9acc08fsd0jkva2-tincd-clippy-0.1.0.drv