--log-level option is deprecated option. Use --log-handler=PREFIX:LEVEL for log verbosity. Usually log level info is not enough. If you debugging something set log-handler to :DEBUG, to debug (everything), usually add more helpfull log. But of course you don't want this info in productioin mode.

For example if you want to see log from test you can run the server with the following argument.

--log_level=:TEST --update=all --dabase=your_database