QFuture continuation segfaults with move only datatypes

#include <memory>

#include <QCoreApplication>

#include <QFuture>
#include <QPromise>
#include <QSharedPointer>
#include <QThread>

int main(int argc, char *argv[]) {
  QCoreApplication a(argc, argv);

  QSharedPointer<QPromise<std::unique_ptr<int>>> sharedPromise(
      new QPromise<std::unique_ptr<int>>);

  QFuture<std::unique_ptr<int>> future = sharedPromise->future();

  QScopedPointer<QThread> thread(QThread::create(
      [](QSharedPointer<QPromise<std::unique_ptr<int>>> sharedPromise) {
        // doing some work
        QThread::sleep(1);

        sharedPromise->start();
        sharedPromise->addResult(std::make_unique<int>(1));
        sharedPromise->finish();
      },
      sharedPromise));

  thread->start();

  future.then([](const std::unique_ptr<int> &value) { qDebug() << *value; });
  QThread::sleep(2);
}