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.
Жители Санкт-Петербурга устроили «крысогон»17:52
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Secure, noise-cancelling Bluetooth earbuds that shine for exercise and everyday use on Android and iPhone
The largest quarterly Neets total was recorded in July to September 2011, when the number peaked at over a million after the 2008 financial crisis.