these 7 derivations will be built:
  /nix/store/3q0gzxfvpswa25nwrdxn06gf7hzsg72d-source.drv
  /nix/store/m20xa4060hca4pc81pqg8zy1lydym72w-cargo-src-cc-1.7.0.drv
  /nix/store/k60hf457f0wkhqhlsixpx6h1nfqshx40-cargo-package-cc-1.7.0.drv
  /nix/store/zhnrm52d3rn3fwxarmi1qkf96bk803lj-vendor-registry.drv
  /nix/store/rk0xicwjcy51268igjqlvzchfm55aqav-vendor-cargo-deps.drv
  /nix/store/gyk7q6n9p4k040b44sdwqax0jm72sh0x-tincd-deps-0.1.0.drv
  /nix/store/as9lz934aby24fm4vky9lrlgcynhlwpa-tincd-clippy-0.1.0.drv