diff --git a/server/stat/src/app/user_app.rs b/server/stat/src/app/user_app.rs
index db55c97..5de2c80 100644
--- a/server/stat/src/app/user_app.rs
+++ b/server/stat/src/app/user_app.rs
@@ -21,18 +21,19 @@ impl f9::app::UserApp for UserApp {
     fn init(&mut self) {
         App::instance().borrow_mut().add_http_handler(
             "Ops$selfChecking".to_string(),
-            Box::new(
-                move |ctx: &mut HttpContext| {
-                    ctx.rsp = "Ops$selfChecking".to_string();
-                }
-            ),
-        );
-        App::instance().borrow_mut().add_http_handler(
-            "Ops$selfChecking1".to_string(),
-            Box::new(
-                move |ctx: &mut HttpContext| {
-                    ctx.rsp = "Ops$selfChecking1".to_string();
-                }
+            Rc::new(RefCell::new(
+                    move |ctx: &mut HttpContext| {
+                        ctx.rsp = "Ops$selfChecking".to_string();
+                        App::instance().borrow_mut().add_http_handler(
+                            "Ops$selfChecking3".to_string(),
+                            Rc::new(RefCell::new(
+                                move |ctx: &mut HttpContext| {
+                                    ctx.rsp = "Ops$selfChecking3".to_string();
+                                }
+                            )),
+                        );
+                    }
+                )
             ),
         );
     }
diff --git a/third_party/librust b/third_party/librust
index dea4990..af0cae3 160000
--- a/third_party/librust
+++ b/third_party/librust
@@ -1 +1 @@
-Subproject commit dea499028da4e75cb1ce47df4453cc7e9d3deabf
+Subproject commit af0cae3d246dc2ac6a4729c7fc6ce9ee7630d029