ttcn3-sccp-test-latest is actually running code from master, not latest
# Always require osmo-stp-master since is the only with sccp_demo_user installed docker_images_require \ "osmo-stp-master" \ "ttcn3-sccp-test"
A way to resolve this would be packaging the demo programs sccp_demo_user (and _server?) in a -demos subpackage.
We only have one test in the testsuite, so this doesn't have much of an impact, just noting for future reference.
I think the missing bit in the issue description is that the latest tests use packaged programs, while the master tests use built from source.
Instead of packaging software that we only need in our test suite, we could of course also "simply" build them from latest?