When on an exercise (for example this one) in the Get help tab, in the Feedback, Issues, Pull Requests paragraph, there’s a link to GitHub track repository for feedback about an exercise, or want to help implement new exercises
However, when such an issue is opened it is automatically closed, redirecting to this forum (example)
I sent a PR to update the documentation: Point to the forum instead of GitHub for feedback and help. by ColinPitrat · Pull Request #2088 · exercism/rust · GitHub