these 5 derivations will be built:
  /nix/store/4nzwva86xjkj50cri2djvgly1lb3ng9f-Cargo.toml.drv
  /nix/store/az7h4wzkiffiyssksmfb5x1sbzfvnf1w-Cargo.toml.drv
  /nix/store/16jnanq8xw43l497l95rnl9y7llwr1s8-source.drv
  /nix/store/v6548gkpfqiqhzyviw8f5p60p8b5ivrm-harmonia-deps-3.2.0.drv
  /nix/store/yp6fc4qypmaj65wcfpfiz8ry3k377rcx-harmonia-3.2.0.drv