Comment 7 for bug 1868116

I took a snapshot to later revert and retry as needed.

$ lxc info e
Name: e
Location: none
Remote: unix://
Architecture: x86_64
Created: 2020/03/20 08:52 UTC
Status: Stopped
Type: container
Profiles: default, kvm
Snapshots:
  e-with-working-qemu-monitor (taken at 2020/03/24 10:52 UTC) (stateless)

Then I did a full upgrade eoan to focal and ran the same binary that formerly worked.
Note: 484 packages upgraded

Now the input is no more working, therefore the next step is to break down those 484 packages to identify which dependency it was that changed the behavior.