Add emojis (#5420)

substrate/client/network/src/protocol/sync/extra_requests.rs

@@ -221,7 +221,7 @@ impl<B: BlockT> ExtraRequests<B> {
 		};
 
 		if self.tree.finalize_root(&finalized_hash).is_none() {
-			warn!(target: "sync", "Imported {:?} {:?} which isn't a root in the tree: {:?}",
+			warn!(target: "sync", "‼️ Imported {:?} {:?} which isn't a root in the tree: {:?}",
 				finalized_hash,
 				finalized_number,
 				self.tree.roots().collect::<Vec<_>>()