these 3 derivations will be built:
  /nix/store/3nlra54jckc1zr4pma0fj9rxri88nz21-treefmt.toml.drv
  /nix/store/m94ia76yv4i6yf5cr8k8jcy19qj5lvd6-treefmt.drv
  /nix/store/crlqvxjl16bbg8xsijiiqz1fgragm8ha-treefmt-check.drv
this path will be fetched (6.0 MiB download, 18.3 MiB unpacked):
  /nix/store/3kr36w0awz5q8yia6nwcriaj3f0065qw-rustfmt-1.99.1