Lots of console output when opening the designer

When opening the design mode on the only QML file in a freshly set up QMLproject I get this output on my console:

SOFT ASSERT: "offset > 0" in file /home/qt/work/build/qt-creator/src/plugins/qmldesigner/designercore/model/rewriterview.cpp, line 744
void QmlDesigner::RewriterView::setupCanonicalHashes() const no offset ModelNode(0, "QtQuick.Rectangle", "")
SOFT ASSERT: "!m_canonicalIntModelNode.isEmpty()" in file /home/qt/work/build/qt-creator/src/plugins/qmldesigner/designercore/model/rewriterview.cpp, line 1085
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.SequentialAnimation" is not a QtQuick.Item
("QtQuick.SequentialAnimation", "QtQuick.QQuickAnimationGroup", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.PropertyAction" is not a QtQuick.Item
("QtQuick.PropertyAction", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.ParallelAnimation" is not a QtQuick.Item
("QtQuick.ParallelAnimation", "QtQuick.QQuickAnimationGroup", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.NumberAnimation" is not a QtQuick.Item
("QtQuick.NumberAnimation", "QtQuick.PropertyAnimation", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.ScriptAction" is not a QtQuick.Item
("QtQuick.ScriptAction", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.ColorAnimation" is not a QtQuick.Item
("QtQuick.ColorAnimation", "QtQuick.PropertyAnimation", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.PropertyAnimation" is not a QtQuick.Item
("QtQuick.PropertyAnimation", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.PauseAnimation" is not a QtQuick.Item
("QtQuick.PauseAnimation", "QtQuick.Animation", "QtQuick.QtObject")
PropertyEditor: invalid node for setup
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.SequentialAnimation" is not a QtQuick.Item
("QtQuick.SequentialAnimation", "QtQuick.QQuickAnimationGroup", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.PropertyAction" is not a QtQuick.Item
("QtQuick.PropertyAction", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.ParallelAnimation" is not a QtQuick.Item
("QtQuick.ParallelAnimation", "QtQuick.QQuickAnimationGroup", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.NumberAnimation" is not a QtQuick.Item
("QtQuick.NumberAnimation", "QtQuick.PropertyAnimation", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.ScriptAction" is not a QtQuick.Item
("QtQuick.ScriptAction", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.ColorAnimation" is not a QtQuick.Item
("QtQuick.ColorAnimation", "QtQuick.PropertyAnimation", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.PropertyAnimation" is not a QtQuick.Item
("QtQuick.PropertyAnimation", "QtQuick.Animation", "QtQuick.QtObject")
void QmlDesigner::ItemLibraryModel::update(QmlDesigner::ItemLibraryInfo*, QmlDesigner::Model*)
"QtQuick.PauseAnimation" is not a QtQuick.Item
("QtQuick.PauseAnimation", "QtQuick.Animation", "QtQuick.QtObject")