Line numbers are different, but it looks like it's still an issue with 2.3 beta 3.
[code]An exception occurred: [ErrorException] [E_NOTICE] Undefined index: host in src/XF/CacheFactory.php on line 176
#0 src/XF/CacheFactory.php(176): XF::handlePhpError(8, '[E_NOTICE] Unde...', '/home/sites/tex...', 176, Array)
#1 src/XF/CacheFactory.php(100): XF\CacheFactory->createMemcachedCache(Array)
#2 src/XF/CacheFactory.php(39): XF\CacheFactory->instantiate('Memcached', Array)
#3 src/XF/App.php(730): XF\CacheFactory->create('Memcached', Array)
#4 src/XF/Container.php(231): XF\App->XF\{closure}('', Array, Object(XF\Container))
#5 src/XF/App.php(2770): XF\Container->create('cache.symfony', '')
#6 src/XF/App.php(758): XF\App->cache('registry', true, false)
#7 src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))
#8 src/XF/App.php(1982): XF\Container->offsetGet('registry')
#9 src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))
#10 src/XF/App.php(1648): XF\Container->offsetGet('extension.liste...')
#11 src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))
#12 src/XF/App.php(3118): XF\Container->offsetGet('extension')
#13 src/XF/App.php(3149): XF\App->extension()
#14 src/XF/App.php(1464): XF\App->extendClass('XF\\AddOn\\Manage...')
#15 src/XF/Container.php(31): XF\App->XF\{closure}(Object(XF\Container))
#16 src/XF/App.php(2562): XF\Container->offsetGet('addon.manager')
#17 src/XF/App.php(2081): XF\App->setupAddOnComposerAutoload()
#18 src/XF/Cli/App.php(25): XF\App->setup()
#19 src/XF.php(505): XF\Cli\App->setup(Array)
#20 src/XF/Cli/Runner.php(54): XF::setupApp('XF\\Cli\\App')
#21 cmd.php(15): XF\Cli\Runner->run()
#22 {main}[/code]