From 880337ac9c3d221cecd2e6d778cca6b8f9002f6f Mon Sep 17 00:00:00 2001
From: Eh2406 <YeomanYaacov@gmail.com>
Date: Wed, 4 Sep 2019 11:08:41 -0400
Subject: [PATCH] `map_dependencies` is doing a deep clone, so lets make it
 cheaper

---
 src/cargo/core/summary.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/cargo/core/summary.rs b/src/cargo/core/summary.rs
index 7080d227453..d6732ec8997 100644
--- a/src/cargo/core/summary.rs
+++ b/src/cargo/core/summary.rs
@@ -26,7 +26,7 @@ pub struct Summary {
 struct Inner {
     package_id: PackageId,
     dependencies: Vec<Dependency>,
-    features: FeatureMap,
+    features: Rc<FeatureMap>,
     checksum: Option<String>,
     links: Option<InternedString>,
     namespaced_features: bool,
@@ -64,7 +64,7 @@ impl Summary {
             inner: Rc::new(Inner {
                 package_id: pkg_id,
                 dependencies,
-                features: feature_map,
+                features: Rc::new(feature_map),
                 checksum: None,
                 links: links.map(|l| l.into()),
                 namespaced_features,