message: refactor(body): use fmt::Debug of Bytes for Chunk
diff: @@ -114,7 +114,7 @@ impl AsRef<[u8]> for Chunk {
  impl fmt::Debug for Chunk {
  #[inline]
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  - fmt::Debug::fmt(self.as_ref(), f)
  + fmt::Debug::fmt(&self.bytes, f)
  }
  }
  