{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"(sym::contract_checks,"}]}
            (sym::contract_checks, None) => disallow(cfg, "-Z contract-checks"),
            (sym::ub_checks, None) => disallow(cfg, "-Z ub-checks"),
            (sym::sanitize, None | Some(_)) => disallow(cfg, "-Z sanitizer"),