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-rw-r--r--src/librustdoc/html/toc.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustdoc/html/toc.rs b/src/librustdoc/html/toc.rs
index 45c75ccd1ab..4d2f23e1c31 100644
--- a/src/librustdoc/html/toc.rs
+++ b/src/librustdoc/html/toc.rs
@@ -167,7 +167,7 @@ impl TocBuilder {
 
         // get the thing we just pushed, so we can borrow the string
         // out of it with the right lifetime
-        let just_inserted = self.chain.mut_last().unwrap();
+        let just_inserted = self.chain.last_mut().unwrap();
         just_inserted.sec_number.as_slice()
     }
 }