@NotNull
  @Override
  public BuildRootProgressImpl cancel(long timeStamp, @NotNull String message) {
    assertStarted();
    FinishBuildEventImpl event = new FinishBuildEventImpl(getId(), null, timeStamp, message, new SkippedResultImpl());
    myListener.onEvent(getBuildId(), event);
    return this;
  }
@NotNull
  @Override
  public BuildRootProgressImpl cancel(long timeStamp, @NotNull String message)