Public bug reported:

Steps to reproduce:
1. Install stock qtorganizer-eds
2. branch UITK (lp:ubuntu-ui-toolkit)
3. build UI toolkit
4. execute Alarm test application from the branched UITK: qmlscene - I modules 
tests/resources/alarm/Alarms.qml
4. do not do anything, just close the test application

Expected result: the application closes cleanly
Failure: the application segfaults.

The call stack trace looks as follows:
0       QMutex::lock()  /usr/lib/x86_64-linux-gnu/libQt5Core.so.5               
0x7ffff60de547  
1       QtOrganizer::QOrganizerAbstractRequest::cancel()        
/usr/lib/x86_64-linux-gnu/libQt5Organizer.so.5          0x7fffcaac0842  
2       QOrganizerEDSEngine::~QOrganizerEDSEngine()     
/usr/lib/x86_64-linux-gnu/qt5/plugins/organizer/libqtorganizer_eds.so           
0x7fffc938ecac  
3       QOrganizerEDSEngine::~QOrganizerEDSEngine()     
/usr/lib/x86_64-linux-gnu/qt5/plugins/organizer/libqtorganizer_eds.so           
0x7fffc938ee29  
4       QtOrganizer::QOrganizerManager::~QOrganizerManager()    
/usr/lib/x86_64-linux-gnu/libQt5Organizer.so.5          0x7fffcaac9bb2  
5       QtOrganizer::QOrganizerManager::~QOrganizerManager()    
/usr/lib/x86_64-linux-gnu/libQt5Organizer.so.5          0x7fffcaac9c79  
6       QObjectPrivate::deleteChildren()        
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5               0x7ffff62869bc  
7       QObject::~QObject()     /usr/lib/x86_64-linux-gnu/libQt5Core.so.5       
        0x7ffff628d792  
8       AlarmManager::~AlarmManager     alarmmanager_p.cpp      43      
0x7fffcad87cbf  
9       __run_exit_handlers             82      0x7ffff56c9509  
10      __GI_exit               104     0x7ffff56c9555  
11      __libc_start_main               319     0x7ffff56aeecc  
12      ??                      0x406133

** Affects: qtorganizer5-eds (Ubuntu)
     Importance: Critical
         Status: Confirmed

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https://bugs.launchpad.net/bugs/1286019

Title:
  test application segfaults with qtorganizer5-eds and UI toolkit trunks

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