def client = Mock(WorkerDaemonClient) {
            isCompatibleWith(_) >> true
            getLogLevel() >> LogLevel.INFO
        }
        starter.startDaemon(options) >> client
        loggingManager.addOutputEventListener(_) >> { args -> listener = args[0] }
        loggingManager.getLevel() >> LogLevel.INFO

        when:

            if (stdErrListener != null) {
                removeChain(stdErrListener);
                stdErrListener = null;
            }
        }
    }

    @Override
    public void addOutputEventListener(OutputEventListener listener) {
        synchronized (lock) {
            addChain(listener);
        }
    }

    @Override
    public void removeOutputEventListener(OutputEventListener listener) {