Looking at https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bsc-test-sccplite/t... looks quite horrible since build 357.
However, with my own manual tests, all of those pass. It looks like most of those failures are sporadic, and I cannot reproduce them.
I am not sure how to find out what is going there, I can just say that osmo-bsc looks quite stable AFAICT and that it seems to be non-determinism / timing in the ttcn3 and/or system load causing the failures.
~N