Container crashes with Repeater

import QtQuick 2.7
import QtQuick.Controls 2.0

ApplicationWindow {
    id: window
    width: 640
    height: 480
    visible: true

    Container {
        id: container
        Item { }
        Item { }
        Item { }
        Item { }
        contentItem: Row {
            Repeater {
                model: container.contentModel
            }
        }
    }
}

ASSERT failure in QList<T>::operator[]: "index out of range", file /home/jpnurmi/Projects/qt-59/qtbase/include/QtCore/../../src/corelib/tools/qlist.h, line 549
The program has unexpectedly finished.

1  __GI_raise                                      raise.c                   58   0x7ffff58d091f 
2  __GI_abort                                      abort.c                   89   0x7ffff58d251a 
3  qt_message_fatal                                qlogging.cpp              1690 0x7ffff6a73248 
4  QMessageLogger::fatal                           qlogging.cpp              796  0x7ffff6a73c05 
5  qt_assert_x                                     qglobal.cpp               3057 0x7ffff6a6dff8 
6  QList<QQmlObjectModelPrivate::Item>::operator[] qlist.h                   549  0x7ffff72ccf81 
7  QQmlObjectModel::object                         qqmlobjectmodel.cpp       273  0x7ffff72ccf81 
8  QQuickRepeater::modelUpdated                    qquickrepeater.cpp        504  0x7ffff7be1d07 
9  QQuickRepeater::qt_static_metacall              moc_qquickrepeater_p.cpp  140  0x7ffff7be1fc7 
10 QQuickRepeater::qt_metacall                     moc_qquickrepeater_p.cpp  260  0x7ffff7be2463 
11 QMetaObject::metacall                           qmetaobject.cpp           301  0x7ffff6c629ec 
12 QMetaObject::activate                           qobject.cpp               3781 0x7ffff6c87207 
13 QMetaObject::activate                           qobject.cpp               3628 0x7ffff6c87451 
14 QQmlInstanceModel::modelUpdated                 moc_qqmlobjectmodel_p.cpp 222  0x7ffff72caf0a 
15 QQmlObjectModelPrivate::move                    qqmlobjectmodel.cpp       133  0x7ffff72cced5 
16 QQmlObjectModel::move                           qqmlobjectmodel.cpp       406  0x7ffff72cced5 
17 QQuickContainerPrivate::moveItem                qquickcontainer.cpp       266  0x7fffd8593e68 
18 QQuickContainer::moveItem                       qquickcontainer.cpp       501  0x7fffd8593f0c 
19 QQuickContainerPrivate::itemSiblingOrderChanged qquickcontainer.cpp       339  0x7fffd859405f 
20 QQuickItemPrivate::siblingOrderChanged          qquickitem.cpp            3633 0x7ffff7b36bbe 
21 QQuickItem::stackBefore                         qquickitem.cpp            2826 0x7ffff7b39b8a 
22 QQuickRepeater::initItem                        qquickrepeater.cpp        447  0x7ffff7be091f 
23 QQuickRepeater::qt_static_metacall              moc_qquickrepeater_p.cpp  139  0x7ffff7be1fb5 
24 QQuickRepeater::qt_metacall                     moc_qquickrepeater_p.cpp  260  0x7ffff7be2463 
25 QMetaObject::metacall                           qmetaobject.cpp           301  0x7ffff6c629ec 
26 QMetaObject::activate                           qobject.cpp               3781 0x7ffff6c87207 
27 QMetaObject::activate                           qobject.cpp               3628 0x7ffff6c87451 
28 QQmlInstanceModel::initItem                     moc_qqmlobjectmodel_p.cpp 236  0x7ffff72caf8a 
29 QQmlObjectModel::object                         qqmlobjectmodel.cpp       276  0x7ffff72ccf8e 
30 QQuickRepeater::modelUpdated                    qquickrepeater.cpp        504  0x7ffff7be1d07 
31 QQuickRepeater::qt_static_metacall              moc_qquickrepeater_p.cpp  140  0x7ffff7be1fc7 
32 QQuickRepeater::qt_metacall                     moc_qquickrepeater_p.cpp  260  0x7ffff7be2463 
33 QMetaObject::metacall                           qmetaobject.cpp           301  0x7ffff6c629ec 
34 QMetaObject::activate                           qobject.cpp               3781 0x7ffff6c87207 
35 QMetaObject::activate                           qobject.cpp               3628 0x7ffff6c87451 
36 QQmlInstanceModel::modelUpdated                 moc_qqmlobjectmodel_p.cpp 222  0x7ffff72caf0a 
37 QQmlObjectModelPrivate::move                    qqmlobjectmodel.cpp       133  0x7ffff72cced5 
38 QQmlObjectModel::move                           qqmlobjectmodel.cpp       406  0x7ffff72cced5 
39 QQuickContainerPrivate::moveItem                qquickcontainer.cpp       266  0x7fffd8593e68 
40 QQuickContainer::moveItem                       qquickcontainer.cpp       501  0x7fffd8593f0c 
41 QQuickContainerPrivate::itemSiblingOrderChanged qquickcontainer.cpp       339  0x7fffd859405f 
42 QQuickItemPrivate::siblingOrderChanged          qquickitem.cpp            3633 0x7ffff7b36bbe 
43 QQuickItem::stackBefore                         qquickitem.cpp            2826 0x7ffff7b39b8a 
44 QQuickRepeater::initItem                        qquickrepeater.cpp        447  0x7ffff7be091f 
45 QQuickRepeater::qt_static_metacall              moc_qquickrepeater_p.cpp  139  0x7ffff7be1fb5 
46 QQuickRepeater::qt_metacall                     moc_qquickrepeater_p.cpp  260  0x7ffff7be2463 
47 QMetaObject::metacall                           qmetaobject.cpp           301  0x7ffff6c629ec 
48 QMetaObject::activate                           qobject.cpp               3781 0x7ffff6c87207 
49 QMetaObject::activate                           qobject.cpp               3628 0x7ffff6c87451 
50 QQmlInstanceModel::initItem                     moc_qqmlobjectmodel_p.cpp 236  0x7ffff72caf8a 
51 QQmlObjectModel::object                         qqmlobjectmodel.cpp       276  0x7ffff72ccf8e 
52 QQuickRepeaterPrivate::requestItems             qquickrepeater.cpp        404  0x7ffff7bde76f 
53 QQuickRepeater::regenerate                      qquickrepeater.cpp        398  0x7ffff7bdecbb 
54 QQuickRepeater::componentComplete               qquickrepeater.cpp        351  0x7ffff7be2310 
55 QQmlObjectCreator::finalize                     qqmlobjectcreator.cpp     1236 0x7ffff72791ac 
56 QQmlComponentPrivate::complete                  qqmlcomponent.cpp         900  0x7ffff71e4891 
57 QQmlComponentPrivate::completeCreate            qqmlcomponent.cpp         936  0x7ffff71e492b 
58 QQmlComponent::completeCreate                   qqmlcomponent.cpp         929  0x7ffff71e49f3 
59 QQmlComponent::create                           qqmlcomponent.cpp         769  0x7ffff71e46dd 
60 QQmlApplicationEnginePrivate::finishLoad        qqmlapplicationengine.cpp 134  0x7ffff726cedd 
61 QQmlApplicationEnginePrivate::startLoad         qqmlapplicationengine.cpp 118  0x7ffff726d141 
62 QQmlApplicationEngine::load                     qqmlapplicationengine.cpp 259  0x7ffff726d164 
63 main                                            main.cpp                  10   0x401001