Dear fellow Osmocmo developers,
for many months it was required to cherry-pick a "HACK" patch to make the BSC tests work, presumably to work around a bug in libosmo-abis, see https://osmocom.org/issues/2718
As it turned out, libosmo-abis was not wrong, but my IPA_Emulation.ttcn, so it was good to not merge that "HACK" and keep it out of master.
In Change-Id: I6d9eaf0d69457caacc03b9049a8bc57976480617 which was just merged to osmo-ttcn3-hacks master I have fixed that bug in IPA_Emulation.ttcn, so now the unmodified master of osmo-ttcn3-hacks will run fine.
I'll remove the cherry-pick from our Dockerfiles, but please do make sure you also stop using it in your local clones/branches/scripts.