@schickling: Have you figured out anything? The issue clearly remains (on 4.1.*). Happened to me on my development machine.

Yep having the same issue here. Anyone figured anything out about this?

I dont know why your supervisor stops working - but I just launched a new service that you might be interested in to help with your problem.

Eyewitness.io provides automated monitoring for your queues, cron tasks and websites. You can get notified via SMS, email or automated phone call when something goes wrong with your queue (or cron/website).

We have a Laravel package available for easier integration if required - but eyewitness.io works with any server or website.

Check it out here: https://eyewitness.io

p.s. We are already working on some additional features, including SSL and Email monitoring.

Having the same issue here, has anyone had any luck in figuring it out?