From f9a924d3c97b5cb8f4b00bcb33dd1a925f68773e Mon Sep 17 00:00:00 2001
From: Takayuki Maeda <takoyaki0316@gmail.com>
Date: Sat, 11 Jun 2022 18:35:10 +0900
Subject: [PATCH] remove an unnecessary format macro

---
 .../src/infer/error_reporting/need_type_info.rs            | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs b/compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs
index 207d2870c5c79..4c734b1589b85 100644
--- a/compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs
+++ b/compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs
@@ -304,11 +304,8 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
         error_code: TypeAnnotationNeeded,
     ) -> DiagnosticBuilder<'tcx, ErrorGuaranteed> {
         let error_code = error_code.into();
-        let mut err = self.tcx.sess.struct_span_err_with_code(
-            span,
-            &format!("type annotations needed"),
-            error_code,
-        );
+        let mut err =
+            self.tcx.sess.struct_span_err_with_code(span, "type annotations needed", error_code);
         err.span_label(span, arg_data.cannot_infer_msg());
         err
     }