these 4 derivations will be built:
  /nix/store/j117rv9d9l4apl2z38wr60kpbnnyiwq2-Cargo.toml.drv
  /nix/store/i6q39q0l4z21vw5ah7va0kzy0f5g24f2-source.drv
  /nix/store/s27ymh391jgk76vk6pv3fngrl1h9kwys-harmonia-deps-3.3.0.drv
  /nix/store/svvqa449n3pm829n2qq5zsjnx7vaih8r-harmonia-clippy-3.3.0.drv