{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"Err(error_guaranteed)"}]}
            Err(error_guaranteed) => throw_inval!(AlreadyReported(
            // FIXME(eddyb) this could be a bit more specific than `AlreadyReported`.
                ReportedErrorInfo::non_const_eval_error(error_guaranteed)