rabbitmq-cli-consumer: Process stops processing messages after certain amount of time

I’m using your library in combination with Symfony console commands. I set it up, configured it added it to Supervisor and started 2 processes. Everything works fine, but after a few hours (around 3-5) it just stops processing messages from the queue. I then have to restart the processes and then it starts processing messages again. But again, just for few hours.

I looked into log files but its nothing there. Have you any idea why this could be happening?

My config file:

[rabbitmq]
host = localhost
username = user
password = pass
vhost = /media
queue = media-converter
compression = Off

[exchange]
name = media-converter
type = direct
durable = On

[logs]
error = /home/user/log/rabbitmq-cli-error.log
info = /home/user/log/rabbitmq-cli-info.log

I’m using the v1.1 (apt package) on Ubuntu 14.04.