From 4fb974091ea91e0528056954b6b5e4d143132155 Mon Sep 17 00:00:00 2001
From: Little-Wallace <bupt2013211450@gmail.com>
Date: Tue, 11 Aug 2020 16:46:51 +0800
Subject: [PATCH] add clone trait for builder

Signed-off-by: Little-Wallace <bupt2013211450@gmail.com>
---
 src/queue/multilevel.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/queue/multilevel.rs b/src/queue/multilevel.rs
index 70130c4..910977a 100644
--- a/src/queue/multilevel.rs
+++ b/src/queue/multilevel.rs
@@ -508,6 +508,7 @@ impl Default for Config {
 }
 
 /// The builder of a multilevel task queue.
+#[derive(Clone)]
 pub struct Builder {
     manager: Arc<LevelManager>,
 }