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-rw-r--r--compiler/rustc_middle/src/lint.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_middle/src/lint.rs b/compiler/rustc_middle/src/lint.rs
index 881b14278e9..22e791bb14c 100644
--- a/compiler/rustc_middle/src/lint.rs
+++ b/compiler/rustc_middle/src/lint.rs
@@ -319,7 +319,7 @@ pub fn struct_lint_level<'s, 'd>(
             }
             LintLevelSource::Node(lint_attr_name, src, reason) => {
                 if let Some(rationale) = reason {
-                    err.note(&rationale.as_str());
+                    err.note(rationale.as_str());
                 }
                 sess.diag_span_note_once(
                     &mut err,