message: rustfmt.toml: group_imports = StdExternalCrate
  Summary:
  To be landed when reformat changes land.
  [Context](https://fb.workplace.com/groups/rust.language/posts/9143028552412345).
diff: # Get help on options with `rustfmt --help=config`
  # Please keep these in alphabetical order.
  edition = "2021"
  +group_imports = "StdExternalCrate"
  imports_granularity = "Item"
  merge_derives = false
  use_field_init_shorthand = true
  