{"ast_node_type":"other","tokens":[{"end":65,"kind":"keyword","start":0,"text":"allow_async_fn_traits:"}]}
            allow_async_fn_traits: [sym::async_fn_traits].into(),
            allow_for_await: [sym::async_iterator].into(),
            // FIXME(gen_blocks): how does `closure_track_caller`/`async_fn_track_caller`