Missing lifetime parameter and formatting

compiler/rustc_codegen_llvm/src/errors.rs

@@ -7,7 +7,7 @@ pub(crate) enum UnknownCTargetFeature<'a> {
     UnknownFeature { feature: &'a str, rust_feature: Option<&'a str> },
 }
 
-impl SessionDiagnostic<'_, ()> for UnknownCTargetFeature {
+impl SessionDiagnostic<'_, ()> for UnknownCTargetFeature<'_> {
     fn into_diagnostic(
         self,
         sess: &'_ rustc_session::parse::ParseSess,

compiler/rustc_codegen_llvm/src/llvm_util.rs

@@ -454,10 +454,7 @@ pub(crate) fn global_llvm_features(sess: &Session, diagnostics: bool) -> Vec<Str
                         None
                     }
                 });
-                sess.emit_warning(UnknownCTargetFeature::UnknownFeature {
-                    feature,
-                    rust_feature,
-                });
+                sess.emit_warning(UnknownCTargetFeature::UnknownFeature { feature, rust_feature });
             }
 
             if diagnostics {