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-rw-r--r--src/librustdoc/html/markdown/tests.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustdoc/html/markdown/tests.rs b/src/librustdoc/html/markdown/tests.rs
index e05635a02..db8504d15 100644
--- a/src/librustdoc/html/markdown/tests.rs
+++ b/src/librustdoc/html/markdown/tests.rs
@@ -38,7 +38,7 @@ fn test_unique_id() {
];
let mut map = IdMap::new();
- let actual: Vec<String> = input.iter().map(|s| map.derive(s.to_string())).collect();
+ let actual: Vec<String> = input.iter().map(|s| map.derive(s)).collect();
assert_eq!(&actual[..], expected);
}