Not sure if there is an issue about this, but I think something strong that backdrop-issue could offer is auto updates for security issues etc.
Since there is semantic versioning, this could be used as a check.
There are obviously a lot of issues that are needing to be addressed here, but thought I would start the issue.

~PR by @serundeputy: https://github.com/backdrop/backdrop/pull/2307~ Revised by @laryn: https://github.com/backdrop/backdrop/pull/3753
Part of META issue: https://github.com/backdrop/backdrop-issues/issues/2018
Recent comments
Thanks, the /tmp folder was the problem. I moved it elsewhere and then the updated worked. Thanks again!
Update 1.35.1 appears to install but hasn't
Probably not the reason, but worth to do a quick check: Sometimes the update cache interferes, so if something's odd with updates - some module (or core) claims to have updated, but then...
Update 1.35.1 appears to install but hasn't
Nope, not touched any permissions!
Update 1.35.1 appears to install but hasn't