message: [alphas] fix clippy
diff: @@ -74,7 +74,7 @@ impl<F: Field> Alphas<F> {
  ty
  };
  - if self.mapping.insert(ty, range.clone()).is_some() {
  + if self.mapping.insert(ty, range).is_some() {
  panic!("cannot re-register {:?}", ty);
  }
  self.next_power = new_power;
  