Nit

server/src/api/update.rs

@@ -95,6 +95,7 @@ impl Update {
         if receiver_count > 0 {
             trace!(receiver_count = receiver_count, update = as_serde!(self); "sending update");
             let count = tx.send(self.clone())?;
+            trace!(count = count; "update sent");
         } else {
             trace!("no update receivers, skipping message");
         }