these 3 derivations will be built:
  /nix/store/9fdfsxq6nvk6lr6j1705zy9lgyq0wn52-treefmt.toml.drv
  /nix/store/y6535h87am3icj4fqr3riy651wxz4cdk-treefmt.drv
  /nix/store/a6197jrjkgc0fw1y7n121raq7n0y5syk-treefmt-check.drv
this path will be fetched (984.9 KiB download, 2.4 MiB unpacked):
  /nix/store/m2a9n8ag4p5kh7291564c96x3qn8jdnd-nixfmt-rs-0.5.3