I give via reflection access to System.out & System.err to ConsoleTarget.

Field streamField = ConsoleTarget.class.getDeclaredField("stream");
streamField.setAccessible(true);
streamField.set(ConsoleTarget.SystemOut, System.out);
streamField.set(ConsoleTarget.SystemErr, System.err);
streamField.setAccessible(false);

Then I change the value of System.out & System.err, so they will create a call to info or error for each line received.

It would be nicer if I did not have to use reflection to do this.