{"ast_node_type":"other","tokens":[{"end":34,"kind":"keyword","start":0,"text":"//"}]}
        // `return Err(__try_var)`
            self.expr_call(sp, self.expr_path(err_path), thin_vec![binding_expr.clone()]);
        let err_expr = self.expr(sp, ast::ExprKind::Ret(Some(err_inner_expr)));