msgq_run_test.py uses src/lib/python/isc/cc/proto_defs.py which
uses cc_generated version which created some .pyo files:
./src/lib/python/isc/cc/cc_generated/__init__.pyo
./src/lib/python/isc/cc/cc_generated/proto_defs.pyo
which are left over after distclean.

quick review via jabber