I can't figure out why, but on OSX 10.10.5 with python3 version 3.6.0 adding the flag --tracerpc does not increase the log level to stdout (which, am I mistaken? should be the active terminal session right in front of me, right?). Actually, shouldn't I expect to see more output (from other log levels) than this even without --tracerpc? Or is the extra logging info going somewhere else...?
$ qa/pull-tester/rpc-tests.py bumpfee
.................................................................................................................................................................................................................
bumpfee.py:
Pass: True, Duration: 105 s
TEST | PASSED | DURATION
bumpfee.py | True | 105 s
ALL | True | 105 s (accumulated)
Runtime: 105 s
$ qa/pull-tester/rpc-tests.py bumpfee --tracerpc
...................................................................................................................................................................................................................................
bumpfee.py:
Pass: True, Duration: 114 s
TEST | PASSED | DURATION
bumpfee.py | True | 114 s
ALL | True | 114 s (accumulated)
Runtime: 114 s