Uncaught RuntimeError: unreachable

[ctm]

Use panic::set_hook to capture and eventually send to the server a backtrace.

Yesterday, a player got:

I'm pretty sure that's what shows up when the client panics. If so, we need to get a backtrace when the client panics and then try to send it to the server and if sending fails, try to log it to IndexDb and if logging it there fails, try to log it to LocalStorage. Then, the window should try to close itself so that the lobby will open a new, working window. We should also display some sort of "Hey, something went wrong, but we're on it" type message.

[ctm]

Here's a Stack Overflow that mentions panic::set_hook.