From 3f92f7d254048f6cc5b8377ec2d1c0c6c42e0789 Mon Sep 17 00:00:00 2001
From: David Pedersen <david.pdrsn@gmail.com>
Date: Sun, 28 Aug 2022 22:17:05 +0200
Subject: [PATCH] Improve opaque error message for `Handler::layer` (#1336)

---
 axum/src/handler/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/axum/src/handler/mod.rs b/axum/src/handler/mod.rs
index 0471122c5e..785d9277a1 100644
--- a/axum/src/handler/mod.rs
+++ b/axum/src/handler/mod.rs
@@ -140,7 +140,7 @@ pub trait Handler<T, S, B = Body>: Clone + Send + Sized + 'static {
     /// ```
     fn layer<L>(self, layer: L) -> Layered<L, Self, T, S, B>
     where
-        L: Layer<WithState<Self, T, S, B>>,
+        L: Layer<WithState<Self, T, S, B>> + Clone,
     {
         Layered {
             layer,