Data race condition

The value of the shared data will be determined by the interleaving of thread execution. Thread shared data is accessed without holding an appropriate lock, possibly causing a race condition
/src/mongo/util/concurrency/ticket_pool.h:238: MISSING_LOCK 150359 Accessing "this->_waiters" without holding lock "mongo::TicketPool<mongo::SimplePriorityTicketQueue>._mutex". Elsewhere, "mongo::TicketPool<mongo::SimplePriorityTicketQueue>._waiters" is written to with "TicketPool._mutex" held 1 out of 1 times.