If it is opt-in then no-one will opt in. 99% of people don't check options.

There likely should be a one-time pop-up on first launch with text like "In the event of factorio crashing reports are sent to the developer to help solve issues. This can be changed by blah blah blah".

I ran into the crash while canceling crafting on my new 13.13 save. Here's the stack trace: https://gist.github.com/anonymous/06c6c3b32f39639c8f41d3c47202cf8c Here's the save. https://www.dropbox.com/s/nq9b9mgi5a86ok2/_autosave2.zip?dl=0 I have not yet been able to reproduce it. I'm a programmer by ...