fix(ci): reduce integration test memory usage

crates/malachite-app/src/node.rs

@@ -849,11 +849,13 @@ impl App {
         #[cfg(not(feature = "byzantine"))]
         let ctx = ArcContext::new();
 
-        // Initialize the application state with the resolved spec and genesis block
-        // NOTE: ArcContext is not always Copy, depending on whether
-        // `byzantine` feature is enabled, so we clone it here to avoid a conditional compilation warning.
-        #[allow(clippy::redundant_clone)]
-        let mut state = State::builder(ctx.clone())
+        #[cfg(feature = "byzantine")]
+        let state_ctx = ctx.clone();
+        #[cfg(not(feature = "byzantine"))]
+        let state_ctx = ctx;
+
+        // Initialize the application state with the resolved spec and genesis block.
+        let mut state = State::builder(state_ctx)
             .identity(identity.consensus.clone())
             .store(store.clone())
             .config(self.config.clone())

crates/test/integration/src/runner.rs

@@ -679,6 +679,8 @@ fn build_node_execution_config(
     // Use the synchronous state-root path to avoid debug-only panics from
     // Reth proof worker pools that are unrelated to lifecycle behavior.
     config.engine.legacy_state_root_task_enabled = true;
+    // These scenarios do not exercise precompile caching, whose memory is multiplied per node.
+    config.engine.precompile_cache_disabled = true;
 
     let reth_port_offset = u16::try_from(test_id * 100 + node_id.as_usize() * 10)
         .wrap_err("Reth port offset overflow")?;
@@ -776,6 +778,16 @@ mod tests {
         }
     }
 
+    #[test]
+    fn execution_config_disables_precompile_cache() {
+        let temp_dir = TempDir::new().expect("temp dir");
+        let ipc = IpcPaths::new(temp_dir.path());
+        let config = build_node_execution_config(0, NodeId::new(0), &ipc, LOCAL_DEV.clone())
+            .expect("node config");
+
+        assert!(config.engine.precompile_cache_disabled);
+    }
+
     #[tokio::test]
     async fn consensus_bridge_uses_existing_handle_event_bus() {
         let handle = test_handle();