From ec4522412089d2dfdd0dadbbcfa812a32d14a8b6 Mon Sep 17 00:00:00 2001
From: Stephen Chung <schungx@live.com>
Date: Sat, 10 Sep 2022 13:46:14 +0800
Subject: [PATCH] Fix sync feature.

---
 tests/closures.rs | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/tests/closures.rs b/tests/closures.rs
index 32d4b795..69df04e1 100644
--- a/tests/closures.rs
+++ b/tests/closures.rs
@@ -378,10 +378,8 @@ fn test_closures_external() -> Result<(), Box<EvalAltResult>> {
 
 #[test]
 #[cfg(not(feature = "no_closure"))]
+#[cfg(not(feature = "sync"))]
 fn test_closures_callback() -> Result<(), Box<EvalAltResult>> {
-    use std::cell::RefCell;
-    use std::rc::Rc;
-
     type SingleNode = Rc<dyn Node>;
 
     trait Node {