remove public Clone for Request

src/server/message.rs

@@ -20,7 +20,6 @@ bitflags! {
 }
 
 /// Request's context
-#[derive(Clone)]
 pub struct Request {
     pub(crate) inner: Rc<InnerRequest>,
 }
@@ -196,6 +195,12 @@ impl Request {
         &self.inner().settings
     }
 
+    pub(crate) fn clone(&self) -> Self {
+        Request {
+            inner: self.inner.clone(),
+        }
+    }
+
     pub(crate) fn release(self) {
         let mut inner = self.inner;
         if let Some(r) = Rc::get_mut(&mut inner) {