these 4 derivations will be built:
  /nix/store/kg8n5v96w9dqhc4bh5p24zfhwwj4hx6d-Cargo.toml.drv
  /nix/store/r95hhg7953hiz9c2mcl9v5i5jbkp8zkf-source.drv
  /nix/store/7dyyx1di8dnij8izq5q63y5flzfsajfn-harmonia-deps-3.2.0.drv
  /nix/store/lca7qnw52krf2farqbs00hkc6g1rcwz8-harmonia-clippy-3.2.0.drv