Merge pull request #1607 from evshary/add_log

Add trace log while dropping the messages.

io/zenoh-transport/src/common/pipeline.rs

@@ -235,6 +235,10 @@ impl StageIn {
                                     // Still no available batch.
                                     // Restore the sequence number and drop the message
                                     $($restore_sn)?
+                                    tracing::trace!(
+                                        "Zenoh message dropped because it's over the deadline {:?}: {:?}",
+                                        deadline.lazy_deadline.wait_time, msg
+                                    );
                                     return false;
                                 }
                                 c_guard = self.mutex.current();