Continuing the discussion from Plugins admin section shows actions not available for moderators:
The backups link on the dashboard suffers from the same fate.
(Yep, I’m clicking through the interface after having demoted myself to moderator…)
I suspect the “upgrade” link at the top would also have this issue, had I not been up to date. Going to the
/admin/upgrade URL as moderator renders a blank page though and not an error, so perhaps something else is happening on that page.