Laravel queue using supervisord ignoring tries limit

I am running a laravel queue being monitored by Supervisord:

php /home/path/to/artisan queue:listen --env=production --timeout=0 --sleep=5 --tries=3

However if a job is failing, it is trying indefinitely - the 'count' in the jobs table shows 255 which is the max mysql field limit, but it has been doing thousands of attempts.

If the jobs table has 'attempts' marked at 255, and 'tries' set as 3 - why is it continuing to run this job in the queue?

via Chebli Mohamed