From c7e1b68918eccc8e289f378c5178ea5852a7feda Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Thu, 25 Apr 2019 17:46:16 -0700
Subject: [PATCH] Don't allocate in `SourceId::is_default_registry`

This gets called quite a lot and doesn't need to allocate in the first
place!
---
 src/cargo/core/source/source_id.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cargo/core/source/source_id.rs b/src/cargo/core/source/source_id.rs
index 16b329336c1..f0ac5f52087 100644
--- a/src/cargo/core/source/source_id.rs
+++ b/src/cargo/core/source/source_id.rs
@@ -337,7 +337,7 @@ impl SourceId {
             Kind::Registry => {}
             _ => return false,
         }
-        self.inner.url.to_string() == CRATES_IO_INDEX
+        self.inner.url.as_str() == CRATES_IO_INDEX
     }
 
     /// Hashes `self`.