v0.34.0_1

src/logging/format.rs

@@ -151,7 +151,11 @@ impl Logs {
             None
         };
         drop(evicted);
-        let _ = self.live.send(entry.clone());
+        // No live viewers means no reason to allocate/clone a second LogEntry.
+        // History retention and external sinks remain unchanged.
+        if self.live.receiver_count() != 0 {
+            let _ = self.live.send(entry.clone());
+        }
         self.push_sink(entry);
     }
     fn push_sink(&self, entry: LogEntry) {