these 5 derivations will be built:
  /nix/store/64i8xkz4jfzxnq536cx34wvn5cn4pr6a-vendor-registry.drv
  /nix/store/dlnhdkw4ma7dm1fi4s3jfxjm42f8zzfl-vendor-cargo-deps.drv
  /nix/store/l15v38nfvbmjfw9i8zxiw5g3r7wlvg85-source.drv
  /nix/store/xjd05412gn7gwhinlqlrhhh7jmxfic08-harmonia-deps-3.3.0.drv
  /nix/store/pxr7ac1k70vfc8nxznckn5fp86x653qb-harmonia-llvm-cov-3.3.0.drv