{"ast_node_type":"function","tokens":[{"end":96,"kind":"keyword","start":0,"text":"ctxt.rustc_main_fn"}]}
                ctxt.rustc_main_fn = Some((id.owner_id.def_id, ctxt.tcx.def_span(id.owner_id)));
            if ctxt.rustc_main_fn.is_none() {
            } else {