{"ast_node_type":"other","tokens":[{"end":91,"kind":"keyword","start":0,"text":"tcx.layout_of(infcx.typing_env(param_env).as_query_input(ty_a))"}]}
                            tcx.layout_of(infcx.typing_env(param_env).as_query_input(ty_a))
                        if let Ok(layout) =
                            && layout.is_1zst()