Make deny for crater

Author: JonathanBrouwer

compiler/rustc_attr_parsing/src/attributes/codegen_attrs.rs

@@ -57,6 +57,7 @@ impl<S: Stage> NoArgsAttributeParser<S> for ColdParser {
         Allow(Target::Fn),
         Allow(Target::Method(MethodKind::Trait { body: true })),
         Allow(Target::Method(MethodKind::TraitImpl)),
+        Error(Target::Method(MethodKind::Trait { body: false })),
         Allow(Target::Method(MethodKind::Inherent)),
         Allow(Target::ForeignFn),
         Allow(Target::Closure),

compiler/rustc_attr_parsing/src/attributes/link_attrs.rs

@@ -472,6 +472,7 @@ impl<S: Stage> SingleAttributeParser<S> for LinkSectionParser {
         Allow(Target::Method(MethodKind::Inherent)),
         Allow(Target::Method(MethodKind::Trait { body: true })),
         Allow(Target::Method(MethodKind::TraitImpl)),
+        Error(Target::Method(MethodKind::Trait { body: false })),
     ]);
     const TEMPLATE: AttributeTemplate = template!(
         NameValueStr: "name",
@@ -592,7 +593,7 @@ impl<S: Stage> SingleAttributeParser<S> for LinkageParser {
         Allow(Target::Static),
         Allow(Target::ForeignStatic),
         Allow(Target::ForeignFn),
-        Warn(Target::Method(MethodKind::Trait { body: false })), // Not inherited
+        Error(Target::Method(MethodKind::Trait { body: false })), // Not inherited
     ]);
 
     const TEMPLATE: AttributeTemplate = template!(NameValueStr: [