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-rw-r--r--src/librustdoc/core.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs
index 51ad1f04340..bf59b3f2573 100644
--- a/src/librustdoc/core.rs
+++ b/src/librustdoc/core.rs
@@ -129,7 +129,7 @@ impl<'tcx> DocContext<'tcx> {
         );
 
         MAX_DEF_ID.with(|m| {
-            m.borrow_mut().entry(def_id.krate.clone()).or_insert(start_def_id);
+            m.borrow_mut().entry(def_id.krate).or_insert(start_def_id);
         });
 
         self.all_fake_def_ids.borrow_mut().insert(def_id);