From 7d3cfd769e1b1bf9b823456572e9dfaf6e5151ac Mon Sep 17 00:00:00 2001
From: Jonas Platte <jplatte+git@posteo.de>
Date: Sun, 15 Dec 2019 20:40:51 +0100
Subject: [PATCH] ID deserialization: Borrow from the deserializer if possible
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… by using Cow<'_, str> instead of String
---
 src/lib.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib.rs b/src/lib.rs
index 6a7d9277..1fdcd391 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,6 +15,7 @@
 extern crate diesel;
 
 use std::{
+    borrow::Cow,
     convert::TryFrom,
     fmt::{Formatter, Result as FmtResult},
 };
@@ -125,7 +126,7 @@ where
     D: Deserializer<'de>,
     T: for<'a> TryFrom<&'a str>,
 {
-    String::deserialize(deserializer).and_then(|v| {
+    Cow::<'_, str>::deserialize(deserializer).and_then(|v| {
         T::try_from(&v).map_err(|_| de::Error::invalid_value(Unexpected::Str(&v), &expected_str))
     })
 }