Comment 0 for bug 1704979

We have an autopkgtest called snap.sh that checks if we're able to properly build an ubuntu-image snap from the current source and that the resulting tool is usable. This test started failing with ubuntu-image 1.1 for armhf, ppc64el and s390x.

By checking the test logs, this test was never really working for archs other than amd64 and i386. The snap never really got properly built and installed, and the test only passed because, for some reason, ubuntu-image was available as a deb (you can see it in the old logs by examining the ubuntu-image --version output, stating a non-snap version number). Starting with changes from 1.1, we now have some tests that make sure the deb is not installed.

In theory building the ubuntu-image snap should be possible on all arches. In practice, on all the fancy archs basically the core snap is *always* failing to install with:
error: cannot communicate with server: Post http://localhost/v2/snaps/core: dial unix /run/snapd.socket: connect: connection refused

This doesn't seem to be a transient error. This causes ubuntu-image to not migrate.