message: Fix clippy lint error.
diff: @@ -56,9 +56,7 @@ mod space_separated_scope {
  {
  let scope: &str = Deserialize::deserialize(d)?;
  Ok(HashSet::from_iter(
  - scope
  - .split_whitespace()
  - .map(|x| x.to_owned())
  + scope.split_whitespace().map(|x| x.to_owned()),
  ))
  }
  