If a queue item has a uid parameter with a non-integer value, db exception is thrown.

I tried creating a queue item and it happened it had an uid parameter set to FALSE. I got a db exception on cron run. It's caused by:

AdvancedQueue::createUniqueItem(), exactly:

uid' => is_array($data) && isset($data['uid']) ? $data['uid'] : $GLOBALS['user']->uid,

Drupal cron queue API doesn't include an uid parameter that'd mean something (at least it's not documented on https://api.drupal.org/api/drupal/modules%21system%21system.queue.inc/fu...), it's also not documented in the advancedqueue module so this may lead to unexpected behaviour if 'uid' is not actually Drupal user ID.