docs: @Subscribe
    @SuppressForbidden("legitimate printStackTrace().")
    public void onSuiteResult(AggregatedSuiteResultEvent e) {
      try {
        if (jsonWriter == null)
          return;
  
        slaves.put(e.getSlave().id, e.getSlave());
        e.serialize(jsonWriter, outputStreams);
      } catch (Exception ex) {
        ex.printStackTrace();
        junit4.log("Error serializing to JSON file: "
            + Throwables.getStackTraceAsString(ex), Project.MSG_WARN);
        if (jsonWriter != null) {
          try {
            jsonWriter.close();
          } catch (Throwable ignored) {
            // Ignore.
          } finally {
            jsonWriter = null;
          }
        }
      }
    }