I installed mopidy and mopidy-mpris extension. Starting mopidy would initialize mpris interface. Result is the whole plasmashell crashing.

Reproducible: Always

Steps to Reproduce:
1. pip install mopidy mopidy-mpris
2. mopidy
3. plasmashell gone

Actual Results:  
Plasmashell crashes

Expected Results:  
Mopidy is detected as mediaplayer

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6e48a14940 (LWP 30486))]

Thread 8 (Thread 0x7f6e287a0700 (LWP 30490)):
#0  0x00007f6e4048e11d in poll () at /lib64/libc.so.6
#1  0x00007f6e468ca182 in _xcb_conn_wait () at /lib64/libxcb.so.1
#2  0x00007f6e468cbc77 in xcb_wait_for_event () at /lib64/libxcb.so.1
#3  0x00007f6e2a724999 in QXcbEventReader::run() () at /lib64/libQt5XcbQpa.so.5
#4  0x00007f6e4109554e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#5  0x00007f6e3f13a60a in start_thread () at /lib64/libpthread.so.0
#6  0x00007f6e40499bbd in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7f6e25d68700 (LWP 30496)):
#0  0x00007f6e4048e11d in poll () at /lib64/libc.so.6
#1  0x00007f6e3b5cc16c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f6e3b5cc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f6e412ccdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f6e41273daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f6e410905a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f6e4535f245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f6e4109554e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f6e3f13a60a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6e40499bbd in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7f6e1d462700 (LWP 30511)):
#0  0x00007f6e4048e11d in poll () at /lib64/libc.so.6
#1  0x00007f6e3b5cc16c in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#2  0x00007f6e3b5cc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#3  0x00007f6e412ccdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#4  0x00007f6e41273daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f6e410905a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#6  0x00007f6e4535f245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#7  0x00007f6e4109554e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#8  0x00007f6e3f13a60a in start_thread () at /lib64/libpthread.so.0
#9  0x00007f6e40499bbd in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7f6e137a4700 (LWP 30514)):
#0  0x00007f6e3b610749 in g_mutex_lock () at /lib64/libglib-2.0.so.0
#1  0x00007f6e3b5cb110 in g_main_context_acquire () at /lib64/libglib-2.0.so.0
#2  0x00007f6e3b5cc025 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#3  0x00007f6e3b5cc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#4  0x00007f6e412ccdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#5  0x00007f6e41273daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f6e410905a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#7  0x00007f6e4535f245 in QQmlThreadPrivate::run() () at /lib64/libQt5Qml.so.5
#8  0x00007f6e4109554e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#9  0x00007f6e3f13a60a in start_thread () at /lib64/libpthread.so.0
#10 0x00007f6e40499bbd in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7f6e11e94700 (LWP 30515)):
#0  0x00007f6e3f13fb10 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007f6e4819a494 in QTWTF::TCMalloc_PageHeap::scavengerThread() () at /lib64/libQt5Script.so.5
#2  0x00007f6e4819a4d9 in  () at /lib64/libQt5Script.so.5
#3  0x00007f6e3f13a60a in start_thread () at /lib64/libpthread.so.0
#4  0x00007f6e40499bbd in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f6d8a366700 (LWP 30516)):
#0  0x00007f6e4108e8df in QMutex::unlock() () at /lib64/libQt5Core.so.5
#1  0x00007f6e412cc341 in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#2  0x00007f6e3b5cb70d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#3  0x00007f6e3b5cc09b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#4  0x00007f6e3b5cc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#5  0x00007f6e412ccdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#6  0x00007f6e41273daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f6e410905a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#8  0x00007f6e45f02616 in QQuickPixmapReader::run() () at /lib64/libQt5Quick.so.5
#9  0x00007f6e4109554e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#10 0x00007f6e3f13a60a in start_thread () at /lib64/libpthread.so.0
#11 0x00007f6e40499bbd in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f6d78fd0700 (LWP 30525)):
#0  0x00007f6e489176e5 in __tls_get_addr () at /lib64/ld-linux-x86-64.so.2
#1  0x00007f6e41094492 in QThreadData::current(bool) () at /lib64/libQt5Core.so.5
#2  0x00007f6e412cc30a in postEventSourcePrepare(_GSource*, int*) () at /lib64/libQt5Core.so.5
#3  0x00007f6e3b5cb70d in g_main_context_prepare () at /lib64/libglib-2.0.so.0
#4  0x00007f6e3b5cc09b in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#5  0x00007f6e3b5cc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#6  0x00007f6e412ccdab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#7  0x00007f6e41273daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#8  0x00007f6e410905a4 in QThread::exec() () at /lib64/libQt5Core.so.5
#9  0x00007f6d7ac063c7 in KCupsConnection::run() () at /lib64/libkcupslib.so
#10 0x00007f6e4109554e in QThreadPrivate::start(void*) () at /lib64/libQt5Core.so.5
#11 0x00007f6e3f13a60a in start_thread () at /lib64/libpthread.so.0
#12 0x00007f6e40499bbd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f6e48a14940 (LWP 30486)):
[KCrash Handler]
#5  0x000000000000006c in  ()
#6  0x00007f6e3b34dc55 in _dbus_type_reader_recurse () at /lib64/libdbus-1.so.3
#7  0x00007f6e42062318 in QDBusArgument::operator>>(QDBusVariant&) const () at /lib64/libQt5DBus.so.5
#8  0x00007f6e42062407 in operator>>(QDBusArgument const&, QVariant&) () at /lib64/libQt5DBus.so.5
#9  0x00007f6d71e069a9 in PlayerContainer::copyProperty(QString const&, QVariant const&, QVariant::Type, PlayerContainer::UpdateType) () at /usr/lib64/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#10 0x00007f6d71e08e5a in PlayerContainer::updateFromMap(QMap<QString, QVariant> const&, PlayerContainer::UpdateType) () at /usr/lib64/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#11 0x00007f6d71e09ce9 in PlayerContainer::getPropsFinished(QDBusPendingCallWatcher*) () at /usr/lib64/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#12 0x00007f6d71e0fca4 in PlayerContainer::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /usr/lib64/qt5/plugins/plasma/dataengine/plasma_engine_mpris2.so
#13 0x00007f6e412a515a in QMetaObject::activate(QObject*, int, int, void**) () at /lib64/libQt5Core.so.5
#14 0x00007f6e4206f76f in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at /lib64/libQt5DBus.so.5
#15 0x00007f6e42070e45 in QDBusPendingCallWatcher::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () at /lib64/libQt5DBus.so.5
#16 0x00007f6e412a6021 in QObject::event(QEvent*) () at /lib64/libQt5Core.so.5
#17 0x00007f6e4282c4ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#18 0x00007f6e42831976 in QApplication::notify(QObject*, QEvent*) () at /lib64/libQt5Widgets.so.5
#19 0x00007f6e4127661b in QCoreApplication::notifyInternal(QObject*, QEvent*) () at /lib64/libQt5Core.so.5
#20 0x00007f6e41278a16 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /lib64/libQt5Core.so.5
#21 0x00007f6e412cc983 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () at /lib64/libQt5Core.so.5
#22 0x00007f6e3b5cbe3a in g_main_context_dispatch () at /lib64/libglib-2.0.so.0
#23 0x00007f6e3b5cc1d0 in g_main_context_iterate.isra () at /lib64/libglib-2.0.so.0
#24 0x00007f6e3b5cc27c in g_main_context_iteration () at /lib64/libglib-2.0.so.0
#25 0x00007f6e412ccd8f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#26 0x00007f6e41273daa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /lib64/libQt5Core.so.5
#27 0x00007f6e4127be6c in QCoreApplication::exec() () at /lib64/libQt5Core.so.5
#28 0x000055d469a81363 in main ()