* cancelled. For details on when this is called, see {@link #collectOneValue}.
   */
  private void collectValueFromNonCancelledFuture(int index, Future<? extends InputT> future) {
    try {
      // We get the result, even if collectOneValue is a no-op, so that we can fail fast.
      // We use getUninterruptibly over getDone as a micro-optimization, we know the future is done.
      collectOneValue(index, getUninterruptibly(future));