What were you trying to do that didn't work?

For cockpit-podman we want to rewrite our test suite to use systemd-run to run podman as a different user as runuser or alternatives don't work as podman requires a valid logind session.

What is the impact of this issue to you?

Cockpit's CI infrastructure wants to use systemd-run to execute commands as `admin` in tests to for example run podman which requires a valid logind session. This would simplify our tests as otherwise we will have to use machinectl shell admin@ which is a less nice API to use and support. All our other test images can use systemd-run.

Please provide the package NVR for which the bug is seen:

How reproducible is this bug?:

100%

Steps to reproduce

1. sudo systemd-run --machine=admin@ --quiet --user --collect --pipe --wait podman run --rm docker.io/library/alpine echo hello

Expected results

the podman containe runs and echos 'hello'.

Actual results

Execution in user context is not supported on non-local systems.