these 3 derivations will be built:
  /nix/store/q16a246iryz0kc9m4ac2pdcwxn8x3ka8-treefmt.toml.drv
  /nix/store/06zy0bji6n6g87kblljcv8p6ychk0ryc-treefmt.drv
  /nix/store/xsv7lryxqkwpkmvc3jqlp8hyr78ygiw3-treefmt-check.drv
this path will be fetched (5.3 MiB download, 15.8 MiB unpacked):
  /nix/store/8h81rjmqzngdy0x7myvf88b82h9brg71-rustfmt-1.97.0