Think you're nailing it. The output references the snap I was attempting to create one evening, before I abandoned the experiment and deleted it (as referenced above). It was called "nominal-roll-generator".
** Attachment added: "nc.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1720442/+attachment/4989635/+files/nc.txt -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1720442 Title: Software (gnome-software) crashes after several seconds. Entirely unusable. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1720442/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs