{"ast_node_type":"other","tokens":[{"end":63,"kind":"keyword","start":0,"text":"tcx.layout_of(self.typing_env().as_query_input(ty))"}]}
            tcx.layout_of(self.typing_env().as_query_input(ty))
        MaybeResult::from(
                .map_err(|err| self.handle_layout_err(*err, span, ty)),