Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
英國超市將巧克力鎖進防盜盒阻止「訂單式」偷竊
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В России ответили на имитирующие высадку на Украине учения НАТО18:04
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