{"ast_node_type":"function","tokens":[{"end":94,"kind":"keyword","start":0,"text":"fn"}]}
fn lookup_deprecation_entry(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<DeprecationEntry> {
    let attrs = tcx.hir_attrs(tcx.local_def_id_to_hir_id(def_id));