From 92e374e778ac6c1b71658e98da8aedabbf454672 Mon Sep 17 00:00:00 2001
From: Chris Emerson <github@mail.nosreme.org>
Date: Fri, 27 Oct 2017 22:57:32 +0100
Subject: [PATCH] Fix a "variable does not need to be mutable" warning.

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

diff --git a/src/lib.rs b/src/lib.rs
index c8045747bfb..a86aa9e5bdd 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -333,7 +333,7 @@ where
             Ok(result) => result,
             Err(e) => {
                 // Create a new error with path_str to help users see which files failed
-                let mut err_msg = path_str.to_string() + &": ".to_string() + &e.to_string();
+                let err_msg = path_str.to_string() + &": ".to_string() + &e.to_string();
                 return Err(io::Error::new(e.kind(), err_msg));
             }
         };