message: Display the connection ID in debug logs
diff: @@ -2673,7 +2673,12 @@ impl Connection {
  impl ::std::fmt::Display for Connection {
  fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
  - write!(f, "{:?} {:p}", self.role, self as *const Self)
  + write!(f, "{:?} ", self.role)?;
  + if let Some(cid) = self.odcid() {
  + std::fmt::Display::fmt(&cid, f)
  + } else {
  + write!(f, "...")
  + }
  }
  }
  