ProjectBuildLogAppender.updateMdc();
            consumer.accept(line);
            buf.reset();
        }
    }

    public void forceFlush() {
        if (buf.size() > 0) {
            String line = new String(buf.toByteArray(), 0, buf.size());
            ProjectBuildLogAppender.updateMdc();
            consumer.accept(line);
            buf.reset();

        if (context.terminal == null) {
            // Create the build log appender; also sets MavenSimpleLogger sink
            ProjectBuildLogAppender projectBuildLogAppender =
                    new ProjectBuildLogAppender(determineBuildEventListener(context));
            context.closeables.add(projectBuildLogAppender);

            MessageUtils.systemInstall(
                    builder -> doCreateTerminal(context, builder),