Warning "QQuickItem::stackBefore: Cannot stack before" with trivial C++ model and Qml delegate

#include <QtGui>
#include <QtCore>
#include <QtQuick>

class MyModel : public QAbstractListModel
{
  Q_OBJECT

public:

  MyModel(QObject *parent = 0) : QAbstractListModel(parent)
  {
    QHash<int, QByteArray> roleNames;
    roleNames[Qt::UserRole + 1] = "text";
    setRoleNames(roleNames);
  }

  int rowCount(const QModelIndex &) const { return m_data.size(); }
  int columnCount(const QModelIndex &) const { return 1; }

  Q_INVOKABLE void setStuff()
  {
    QStringList s;
    s << "One" << "two" << "three";
    beginResetModel();
    m_data = s;
    endResetModel();
  }

  QVariant data(const QModelIndex &index, int) const
  {
    return m_data.at(index.row());
  }

private:

  QStringList m_data;
};

int main(int argc, char *argv[])
{
  QGuiApplication app(argc, argv);

  QQuickView viewer;
  MyModel m;
  viewer.rootContext()->setContextProperty("theModel", &m);
  viewer.setSource(QUrl("qrc:/qml/untitled3/main.qml"));
  viewer.show();

  return app.exec();
}

#include "main.moc"

import QtQuick 2.0

Rectangle {
  width: 360
  height: 360

  Column {
    anchors.fill: parent

    Repeater {
      id: repeater
      model: theModel
      delegate: Row {
        Text { text: "Yeah " + model.text }
      }
    }
  }

  Timer {
    // used to trigger model reset
    interval: 1000
    onTriggered: theModel.setStuff()
    running: true
    repeat: true
  }
}