{"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"self.report_error(param.ident.span,"}]}
                        self.report_error(param.ident.span, err);
                        let err = ResolutionError::NameAlreadyUsedInParameterList(ident, span);
                        let rib = match param.kind {