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Thread 1 (Thread 0xf3365700 (LWP 30607)):
#0  0xf5a4418f in QQmlBinding::QQmlBinding(QV4::Value const&, QObject*, QQmlContextData*) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#1  0xeb47a95b in UCStyleHints::_q_applyStyleHints() () at /usr/lib/i386-linux-gnu/libUbuntuToolkit.so.5
#2  0xeb4a4464 in  () at /usr/lib/i386-linux-gnu/libUbuntuToolkit.so.5
#3  0xf7472ba6 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x9442778, signalOffset=29, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3730
        receiverInSameThread = <optimized out>
        sw = {receiver = 0x9443cd0, previousSender = 0x0, currentSender = {sender = 0x9442778, signal = 30, ref = 1}, switched = true}
        callFunction = 0xeb4a43e0
        receiver = 0x9443cd0
        method_relative = 0
        c = 0x9443e00
        last = 0x9443e00
        locker = {val = 4151031872}
        connectionLists = {connectionLists = 0x9443b78}
        list = <optimized out>
        signal_index = 30
        empty_argv = {0x0}
        currentThreadId = 0xf3365700
#4  0xf74730cd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=0x9442778, m=0xeb5fa964 <UCStyledItemBase::staticMetaObject>, local_signal_index=1, argv=0x0) at kernel/qobject.cpp:3595
#5  0xeb476e12 in UCStyledItemBase::styleInstanceChanged() () at /usr/lib/i386-linux-gnu/libUbuntuToolkit.so.5
#6  0xeb4784a5 in UCStyledItemBasePrivate::loadStyleItem(bool) () at /usr/lib/i386-linux-gnu/libUbuntuToolkit.so.5
#7  0xeb476f3b in UCStyledItemBasePrivate::completeComponentInitialization() () at /usr/lib/i386-linux-gnu/libUbuntuToolkit.so.5
#8  0xeb47884c in UCStyledItemBase::componentComplete() () at /usr/lib/i386-linux-gnu/libUbuntuToolkit.so.5
#9  0xf5a50103 in  () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#10 0xf59dc19f in  () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#11 0xf59dcae2 in QQmlEnginePrivate::incubate(QQmlIncubator&, QQmlContextData*) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#12 0xf59d7db4 in QQmlComponent::create(QQmlIncubator&, QQmlContext*, QQmlContext*) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#13 0xf5e16c7c in  () at /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#14 0xf5e16e09 in  () at /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#15 0xf5e1730f in  () at /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#16 0xf5e17935 in  () at /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#17 0xf5e17abd in  () at /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#18 0xf59bf500 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#19 0xf744d953 in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) (object=0x8f1b5a8, cl=QMetaObject::WriteProperty, idx=43, argv=0xfffd0a1c) at kernel/qmetaobject.cpp:293
#20 0xf59d50e1 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyPrivate::WriteFlag>) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#21 0xf599fbcc in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, QQmlPropertyData*, QV4::Value const&) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#22 0xf59a040e in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*, int, QV4::Value const&) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#23 0xf59a0464 in QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, int, QV4::Value const&) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#24 0xf59b705b in QV4::Runtime::setQmlQObjectProperty(QV4::ExecutionEngine*, QV4::Value const&, int, QV4::Value const&) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#25 0xe8e36d54 in  ()
#26 0xf5955658 in  () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#27 0xf5a3e41a in QQmlJavaScriptExpression::evaluate(QV4::CallData*, bool*) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#28 0xf59e23e2 in QQmlBoundSignalExpression::evaluate(void**) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#29 0xf59e374d in  () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#30 0xf5a1bd32 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#31 0xf59c4371 in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#32 0xf7472445 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x8ffb370, signalOffset=3, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3616
        signal_index = 3
        empty_argv = {0x902a3c8}
        currentThreadId = <optimized out>
#33 0xf74730cd in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (sender=0x8ffb370, m=0xf5bff780 <QQmlComponentAttached::staticMetaObject>, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3595
#34 0xf5aa51a2 in QQmlComponentAttached::completed() () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#35 0xf5a506e9 in  () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#36 0xf59d78be in QQmlComponentPrivate::complete(QQmlEnginePrivate*, QQmlComponentPrivate::ConstructionState*) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#37 0xf59d7982 in QQmlComponentPrivate::completeCreate() () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#38 0xf59d79cb in QQmlComponent::completeCreate() () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#39 0xf59d77d9 in QQmlComponent::create(QQmlContext*) () at /usr/lib/i386-linux-gnu/libQt5Qml.so.5
#40 0xf5e1e879 in QQuickView::continueExecute() () at /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#41 0xf5e1edcc in QQuickViewPrivate::execute() () at /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#42 0xf5e1ef4f in QQuickView::setSource(QUrl const&) () at /usr/lib/i386-linux-gnu/libQt5Quick.so.5
#43 0xf76c6f1a in quick_test_main(int, char**, char const*, char const*) () at /usr/lib/i386-linux-gnu/libQt5QuickTest.so.5
#44 0x08048512 in  ()
#45 0xf7048637 in __libc_start_main (main=0x80484e0, argc=7, argv=0xfffd2164, init=0x8048630, fini=0x8048690, rtld_fini=0xf7773780 <_dl_fini>, stack_end=0xfffd215c) at ../csu/libc-start.c:291
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -149020672, -149020672, 0, -1494248753, 1436933342}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x7, 0x804851f}, data = {prev = 0x0, cleanup = 0x0, canceltype = 7}}}
        not_first_call = <optimized out>
#46 0x08048540 in  ()