From 4203075f19d5c95893a277d1a53fccb268c5645b Mon Sep 17 00:00:00 2001
From: Jianyong Wu <jianyong.wu@arm.com>
Date: Wed, 1 Feb 2023 16:38:37 +0800
Subject: [PATCH] error: replace cause method with source

cause method for std::error::Error is depricated by rust, source method
is recommended.

Fixes: #107
Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>
---
 src/error.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/error.rs b/src/error.rs
index 884db3a..fd582e7 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -85,7 +85,7 @@ impl fmt::Display for Error {
 }
 
 impl StdError for Error {
-    fn cause(&self) -> Option<&dyn StdError> {
+    fn source(&self) -> Option<&(dyn StdError + 'static)> {
         #[allow(clippy::manual_map)]
         match self.cause {
             Some(ref x) => Some(&**x),