"unable to connect to source LXD" is back

[ddennedy]

I see this has been reported before, but I opened this anew because the situation is different at least time-wise. This just started happening again a day or two ago. Hard to be exact because my nightly builds started failing a couple of days ago for a different reason.
See https://github.com/mltframework/shotcut/runs/2079434751?check_suite_focus=true

I noticed that this action was recently released as v1.2.0, and I upgraded to that but it did not help. I have very limited experience with lxd/lxc. I guess lxd is not running.

[casperdcl]

looks like a duplicate of #24/#23

From https://github.com/samuelmeuli/action-snapcraft#basic you need runs-on: ubuntu-18.04

[ddennedy]

Thank you. I saw #23 previously, but without digging into the details it just looked like there was a fix that was applied 3 months ago. It was not obvious that ubuntu-20.04 is not supported. Yes, the readme specifically mentions 18.04, which is helpful, but not clear that 20.04 does not work. One might easily assume a Ubuntu-based technology like snap would work on ubuntu-latest, which is what we were using. I have changed my workflow to 18.04, and now it works.