Comment 4 for bug 1516228

I confirm that it no longer crashes, and the error message is good.
I think this will continue to cause issues, because it's easy to miss that you have to add git:// to the source. But there's no easy way to tell if github.com/liu-xiao-guo/webcamserv is supposed to be a local directory, or pulled from github. Maybe we can try to find it locally, and if it fails, try to download it, but this might also cause unexpected results if it was done by mistake. I'm happy leaving it for now, and we can see if we get more people complaining about go sources.