if impl_item.generics.params.is_empty();
// Check if return type is String
- if is_type_diagnostic_item(cx, return_ty(cx, impl_item.hir_id()), sym::string_type);
+ if is_type_diagnostic_item(cx, return_ty(cx, impl_item.hir_id()), sym::String);
// Filters instances of to_string which are required by a trait
if trait_ref_of_method(cx, impl_item.hir_id()).is_none();