these 4 derivations will be built:
  /nix/store/bgk49y0pqz7ikj9b37k0z9nvnf4dmlsa-Cargo.toml.drv
  /nix/store/g9jad8pzc1iaq8bfpsxamk57kk12rgmw-source.drv
  /nix/store/x7c39y3b8s0hnivbsla5agp3pir7fb26-harmonia-deps-3.3.0.drv
  /nix/store/dzb3myva5sa8575m99q7h5rv49nhi9dg-harmonia-clippy-3.3.0.drv