{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
    // FIXME(staged_api): We might want to look at the normal stability attributes too but
    let attrs = tcx.hir_attrs(tcx.local_def_id_to_hir_id(def_id));
    // first we would need a way to let std/core use APIs with unstable feature bounds from