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<?php try { new CachingIterator(new ArrayIterator([]), 3);} catch (Exception $e) { echo $e->getMessage();}
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ValueError: CachingIterator::__construct(): Argument #2 ($flags) must contain only one of CachingIterator::CALL_TOSTRING, CachingIterator::TOSTRING_USE_KEY, CachingIterator::TOSTRING_USE_CURRENT, or CachingIterator::TOSTRING_USE_INNER in /in/LXlAo:5 Stack trace: #0 /in/LXlAo(5): CachingIterator->__construct(Object(ArrayIterator), 3) #1 {main} thrown in /in/LXlAo on line 5
Process exited with code 255.

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