{"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"impl<'a,"}]}
impl<'a, 'b> rustc_ast::visit::Visitor<'a> for AlwaysErrorOnGenericParam<'a, 'b> {
    fn visit_attribute(&mut self, attr: &'a rustc_ast::Attribute) -> Self::Result {