PHPUnit dumps warnings to the console...

Warning: Invalid argument supplied for foreach() in /var/www/wiki/mediawiki/core/includes/objectcache/SqlBagOStuff.php on line 232

Call Stack:
    0.0009     245936   1. {main}() /var/www/wiki/mediawiki/core/tests/phpunit/phpunit.php:0
    2.0765   14629624   2. MediaWikiPHPUnitCommand::main() /var/www/wiki/mediawiki/core/tests/phpunit/phpunit.php:119
    2.0767   14641960   3. MediaWikiPHPUnitCommand->run() /var/www/wiki/mediawiki/core/tests/phpunit/MediaWikiPHPUnitCommand.php:64
    2.0767   14642440   4. PHPUnit_TextUI_Command->run() /var/www/wiki/mediawiki/core/tests/phpunit/MediaWikiPHPUnitCommand.php:80
    7.3004   87363544   5. PHPUnit_TextUI_TestRunner->doRun() /usr/share/php/PHPUnit/TextUI/Command.php:176
    7.3094   87684904   6. PHPUnit_Framework_TestSuite->run() /usr/share/php/PHPUnit/TextUI/TestRunner.php:349
    7.4141   87686664   7. PHPUnit_Framework_TestSuite->run() /usr/share/php/PHPUnit/Framework/TestSuite.php:705
   22.3535  178137936   8. PHPUnit_Framework_TestSuite->run() /usr/share/php/PHPUnit/Framework/TestSuite.php:705
   22.3537  178139472   9. PHPUnit_Framework_TestSuite->runTest() /usr/share/php/PHPUnit/Framework/TestSuite.php:745
   22.3537  178139952  10. MediaWikiTestCase->run() /usr/share/php/PHPUnit/Framework/TestSuite.php:775
   22.3586  178141408  11. ApiQueryContinueTest->addDBData() /var/www/wiki/mediawiki/core/tests/phpunit/MediaWikiTestCase.php:109
   23.4059  178284240  12. ApiTestCase->editPage() /var/www/wiki/mediawiki/core/tests/phpunit/includes/api/query/ApiQueryContinueTest.php:47
   23.4063  178285904  13. WikiPage->doEditContent() /var/www/wiki/mediawiki/core/tests/phpunit/includes/api/ApiTestCase.php:56
   23.5032  178306552  14. Title->getUserPermissionsErrors() /var/www/wiki/mediawiki/core/includes/WikiPage.php:1904
   23.5032  178306736  15. Title->getUserPermissionsErrorsInternal() /var/www/wiki/mediawiki/core/includes/Title.php:1820
   23.5140  178309936  16. Title->checkPermissionHooks() /var/www/wiki/mediawiki/core/includes/Title.php:2338
   23.5142  178310696  17. wfRunHooks() /var/www/wiki/mediawiki/core/includes/Title.php:1946
   23.5142  178310696  18. Hooks::run() /var/www/wiki/mediawiki/core/includes/GlobalFunctions.php:4032
   23.5167  178312136  19. call_user_func_array() /var/www/wiki/mediawiki/core/includes/Hooks.php:199
   23.5167  178312848  20. PageTranslationHooks::lockedPagesCheck() /var/www/wiki/mediawiki/core/includes/Hooks.php:199
   23.5168  178312984  21. SqlBagOStuff->get() /var/www/wiki/mediawiki/extensions/Translate/tag/PageTranslationHooks.php:777
   23.5168  178313336  22. SqlBagOStuff->getMulti() /var/www/wiki/mediawiki/core/includes/objectcache/SqlBagOStuff.php:200