All runs of run_workspace_command() after the first fail with recent systemd-nspawn #1
Description
This affects most guest distros.
On Parabola, this was a regression in the systemd-nspawn 239.2 → 239.300 update. Unfortunately, 239-6.git9f3aed1.fc29 in docker.io/fedora also demonstrates this issue, so it affects all hosts.