these 6 derivations will be built:
  /nix/store/2jm23wbifnay9qhdmnfrgy3jmhxpvnyi-source.drv
  /nix/store/v8w52mb4jbbwnbmh8fzgwjapl8b2hwzz-cargo-package-libc-0.2.189.drv
  /nix/store/r43sw7xnqnpsqmfzvgwdk27izl0a9a4h-vendor-registry.drv
  /nix/store/4vjww18zfvpxagc825lpnvdjq8mvp96g-vendor-cargo-deps.drv
  /nix/store/q6y4wpff59pdhsqkwz1piip2v4y1029v-harmonia-deps-3.2.0.drv
  /nix/store/7z6wzpzhszpi9wj962czs75g4pdjyygq-harmonia-3.2.0.drv