message: Add [self] to padding log
  We should probably do this more often.
diff: @@ -984,7 +984,11 @@ impl Connection {
  f = Frame::decode(&mut d)?;
  }
  if consecutive_padding > 0 {
  - qdebug!("PADDING frame repeated {} times", consecutive_padding);
  + qdebug!(
  + [self],
  + "PADDING frame repeated {} times",
  + consecutive_padding
  + );
  consecutive_padding = 0;
  }
  