{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"throw_ub_custom!(fluent::const_eval_dealloc_immutable,"}]}
            throw_ub_custom!(fluent::const_eval_dealloc_immutable, alloc = alloc_id,);
        if alloc.mutability.is_not() {
        }