these 5 derivations will be built:
  /nix/store/dc0jyd4jf39dk73q81gj9va9nnz6qdsa-Cargo.toml.drv
  /nix/store/n73rf1nzy89khzibqdvvyk5lr1x1w4fq-Cargo.toml.drv
  /nix/store/wzi7x6557qhzj7qqsgbdrjj4mjkm2dli-source.drv
  /nix/store/7szd6gwrbhggbir581cs78kcwxdp4617-harmonia-deps-3.2.0.drv
  /nix/store/5s3ar0agzp0jpizkaippg11xiqhs6i96-harmonia-3.2.0.drv