workerman在stop时偶发exit with status 11和139

workerman以调试模式启动后，执行了一次请求，该请求后续的业务逻辑中包含了至少一次数据库的操作，在完成该次请求5-10分钟后，ctrl+c 停止进程后会报exit wtih status 11，有时是exit with status 139；

Workerman[app.php] start in DEBUG mode
------------------------------------------------ WORKERMAN -------------------------------------------------
Workerman version:4.0.20          PHP version:7.3.31
------------------------------------------------- WORKERS --------------------------------------------------
proto   user            worker                     listen                     processes    status
tcp     root            rpc_server                 jsonRpc2://0.0.0.0:5454    2             [OK]
tcp     root            order_callback_consumer    none                       2             [OK]
tcp     root            order_push_consumer        none                       2             [OK]
tcp     root            log_consumer               none                       2             [OK]
------------------------------------------------------------------------------------------------------------
Press Ctrl+C to stop. Start success.
^CWorkerman[app.php] stopping ...
worker[rpc_server:24] exit with status 11
Workerman[app.php] has been stopped

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