https://github.com/Codeception/Codeception/blob/2.2.10/src/Codeception/Module/AMQP.php#L153
$this->connection->channel()->queue_declare($queue);
If the queue is already declared it can cause error like this:
[PhpAmqpLib\Exception\AMQPProtocolChannelException] PRECONDITION_FAILED - inequivalent arg 'durable' for queue 'TEST.start' in vhost 'test_vhost': received 'false' but current is 'true'
Scenario Steps:
8. $I->pushToQueue("TEST.start","test") at tests/functional/startCest.php:53
I think that queue_declare call can be removed from pushToQueue, because separate declareQueue method was introduced in 2.2.9.
(Probably it is best to make this change in master branch)