Recover from “Issue fork creation failed!” due to “Failed to create wiki”

We have been getting up to one Failed to create wiki exception per day in issue fork creation. Internally in GitLab, this seems to be a timeout. This leaves a GitLab project for the fork, with an empty repository instead of starting the forking process. This leftover project then blocks all future forking of that issue until is is cleaned up.

When this exception is caught we should:

• Delete the partial fork project
• Rename it to not collide, deletion happens after a week and the namespace/etc is still used in the meantime
• Change the path to not collide