these 4 derivations will be built:
  /nix/store/3si2jsaji0wvfbgamahjgda6cp5l37ka-Cargo.toml.drv
  /nix/store/m8qllhbqynwwlkd22zs8534y9swvk5r5-source.drv
  /nix/store/xy0ncv29wl5ajldjpn9n1lddmybn24rd-harmonia-deps-3.3.0.drv
  /nix/store/wxabwqxyc7a0kbd2ppvgq7k6q8hngmxy-harmonia-clippy-3.3.0.drv