.
Thread 1 (LWP 9091):
#0  0x00007f35dc2a7f79 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 9091
        selftid = 9091
#1  0x00007f35dc2ab388 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x50002, sa_sigaction = 0x50002}, sa_mask = {__val = {1, 0, 139869335418199, 1, 0, 140735778499536, 139869303569704, 38484288, 0, 0, 139869335446805, 1, 136, 0, 0, 139869307471712}}, sa_flags = -567568448, sa_restorer = 0x6f6e20646c756f43}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007f35dcbcb3f5 in qt_message_fatal (context=..., message=...) at global/qlogging.cpp:868
No locals.
#3  QMessageLogger::fatal (this=<optimized out>, msg=<optimized out>) at global/qlogging.cpp:356
        message = {static null = {<No data fields>}, d = 0x24b3d00}
        ap = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fff9a15acb0, reg_save_area = 0x7fff9a15abf0}}
#4  0x00007f35d45b1f02 in QXcbConnection::QXcbConnection (this=0x24b3940, nativeInterface=0x24b38a0, displayName=0x0) at qxcbconnection.cpp:284
        dpy = 0x0
        extensions = {0x11c00000001, 0x7f35d45ffb54, 0x7f35d46011e0 <QXcbConnection::QXcbConnection(QXcbNativeInterface*, char const*)::__PRETTY_FUNCTION__>, 0x7f35d45ff632, 0x2e0, 0x24b10d0, 0x7fff9a15ae40, 0x7fff9a15ada0}
#5  0x00007f35d45b3856 in QXcbIntegration::QXcbIntegration (this=0x24b10d0, parameters=...) at qxcbintegration.cpp:105
No locals.
#6  0x00007f35d45c226c in QXcbIntegrationPlugin::create (this=<optimized out>, system=..., parameters=...) at main.cpp:58
No locals.
#7  0x00007f35ddbb9e62 in init_platform (platformPluginPath=..., pluginArgument=...) at kernel/qguiapplication.cpp:772
        arguments = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x2496a10}, d = 0x2496a10}}, <No data fields>}
        name = {static null = {<No data fields>}, d = 0x24969e0}
        themeNames = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x24958d0}, d = 0x24958d0}}, <No data fields>}
#8  QGuiApplicationPrivate::createPlatformIntegration (this=<optimized out>) at kernel/qguiapplication.cpp:895
        platformPluginPath = {static null = {<No data fields>}, d = 0x7f35dcde6200 <qt_array>}
        platformName = {d = 0x24969b0}
        platformNameEnv = {d = 0x7f35dcde6260 <QArrayData::shared_null>}
        j = 1
#9  0x00007f35ddbba8a5 in QGuiApplicationPrivate::createEventDispatcher (this=0x2494710) at kernel/qguiapplication.cpp:902
No locals.
#10 0x00007f35dcd58e59 in QCoreApplication::init (this=this@entry=0x2494570) at kernel/qcoreapplication.cpp:612
        d = 0x2494710
#11 0x00007f35dcd58eb6 in QCoreApplication::QCoreApplication (this=0x2494570, p=...) at kernel/qcoreapplication.cpp:549
No locals.
#12 0x00007f35ddbbb3ed in QGuiApplication::QGuiApplication (this=0x2494570, argc=@0x7fff9a15b01c: 1, argv=0x7fff9a15b438, flags=327682) at kernel/qguiapplication.cpp:369
No locals.
#13 0x000000000040458c in startShell (argc=argc@entry=1, argv=argv@entry=0x7fff9a15b438, server=server@entry=0x0) at /build/buildd/unity8-7.84+14.04.20140221/src/main.cpp:59
        __PRETTY_FUNCTION__ = "int startShell(int, const char**, void*)"
        qmlArgs = {<QObject> = {_vptr.QObject = 0x0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7f35dce7ed00 <qt_meta_stringdata_QObject>, data = 0x7f35dce7ebe0 <qt_meta_data_QObject>, static_metacall = 0x7f35dcd819c0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x7f35de0d7557}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7f35dcec8ea0 <qt_meta_stringdata_Qt>, data = 0x7f35dcec6900 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7f35dd15c260 <QObject::staticMetaObject>, stringdata = 0x40a660 <qt_meta_stringdata_ApplicationArguments>, data = 0x40a5c0 <qt_meta_data_ApplicationArguments>, static_metacall = 0x409bf0 <ApplicationArguments::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, m_size = {wd = 1, ht = 1163413830}}
        view = <optimized out>
        mouseTouchAdaptor = <optimized out>
        nativeInterface = <optimized out>
        source = {d = 0x0}
        application = <optimized out>
        args = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7f35dcb58bc8}, d = 0x7f35dcb58bc8}}, <No data fields>}
        result = <optimized out>
#14 0x000000000040408e in main (argc=1, argv=0x7fff9a15b438) at /build/buildd/unity8-7.84+14.04.20140221/src/main.cpp:187
        __PRETTY_FUNCTION__ = "int main(int, const char**)"