{"ast_node_type":"variable","tokens":[{"end":32,"kind":"keyword","start":0,"text":"let"}]}
        let c = match c.kind() {
    fn try_fold_const(&mut self, c: Const<'tcx>) -> Result<Const<'tcx>, ()> {
            ConstKind::Infer(InferConst::Var(_)) if self.infer_suggestable => c,