From 42685bbfe9c1abbfdba31c07b77479fd1fbb6cd8 Mon Sep 17 00:00:00 2001
From: bin liu <bin@hyper.sh>
Date: Mon, 14 Sep 2020 15:22:55 +0800
Subject: [PATCH] errors: add sync marker to error cause

Errors cause should be shared to let anyhow to wrap it.

Fixes: #7

Signed-off-by: bin liu <bin@hyper.sh>
---
 src/error.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/error.rs b/src/error.rs
index ff5549c..0e4f69c 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -45,7 +45,7 @@ pub enum ErrorKind {
 #[derive(Debug)]
 pub struct Error {
     kind: ErrorKind,
-    cause: Option<Box<StdError + Send>>,
+    cause: Option<Box<StdError + Send + Sync>>,
 }
 
 impl fmt::Display for Error {
@@ -88,7 +88,7 @@ impl Error {
 
     pub(crate) fn with_cause<E>(kind: ErrorKind, cause: E) -> Self
     where
-        E: 'static + Send + StdError,
+        E: 'static + Send + Sync + StdError,
     {
         Self {
             kind,