fix

benches/bench/main.rs

@@ -222,6 +222,7 @@ fn config() -> Config {
                 listen_address: SUBWAY_SERVER_ADDR.to_string(),
                 port: SUBWAY_SERVER_PORT,
                 max_connections: 1024 * 1024,
+                max_subscriptions_per_connection: 1024,
                 max_batch_size: None,
                 request_timeout_seconds: 120,
                 http_methods: Vec::new(),