I agree with this. For an open source project it's just going to be ridiculous. "Hey you know all that free work you already do? Well now you can troubleshoot some user's OS issues as well! Doesn't that sound like fun, we all know you love unpaid work!"
I've responded to this lower: https://news.ycombinator.com/item?id=13545862 , but this is not how this feature works. The confusion is completely understandable if you've never used RunKit, but the idea is not to give people containers, but rather a "common ground" where users can provide reproducible test cases.
