these 5 derivations will be built:
  /nix/store/mbqgmgzivbfgc7y999pw54x4v6l07lzn-Cargo.toml.drv
  /nix/store/y4qg72yn4aiklcp98mq9malijgz4bvp0-Cargo.toml.drv
  /nix/store/4rhi24i8hr7hfdmhk0aj89ngxb8lbywp-source.drv
  /nix/store/h13wpk6r1b19bgqxi3z816qcdl3fm18i-tribuchet-deps-0.1.0.drv
  /nix/store/0qdldf81d0lzr7iggf4a5f9vxky0zs7f-tribuchet-0.1.0.drv