.
Thread 4 (Thread 0x7f2afb0fe700 (LWP 2308)):
#0  0x00007f2b18a24773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f2b17c58078 in g_main_context_poll (n_fds=1, fds=0x19a74b0, timeout=-1, context=0x1b0bc10, priority=<optimized out>) at /build/buildd/glib2.0-2.29.90/./glib/gmain.c:3402
        poll_func = 0x7f2b17c66620 <g_poll>
#2  g_main_context_iterate (context=0x1b0bc10, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.29.90/./glib/gmain.c:3084
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x19a74b0
#3  0x00007f2b17c58539 in g_main_context_iteration (context=0x1b0bc10, may_block=1) at /build/buildd/glib2.0-2.29.90/./glib/gmain.c:3152
        retval = <optimized out>
#4  0x00007f2b1aec1ed6 in QEventDispatcherGlib::processEvents (this=0x1b0bb20, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
        d = 0x1b0bb40
        canWait = true
        savedFlags = {i = 0}
        result = <optimized out>
#5  0x00007f2b1ae95cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
        d = 0x1b39650
#6  0x00007f2b1ae95ef7 in QEventLoop::exec (this=0x7f2afb0fd7a0, flags=...) at kernel/qeventloop.cpp:201
        d = 0x1b39650
        app = 0x7fffca67a0b0
#7  0x00007f2b1adad27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
        d = 0x1b0a680
        locker = {val = 28354320}
        eventLoop = {<QObject> = {_vptr.QObject = 0x7f2b1b1c48d0, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7f2b1af514e0 "QObject", data = 0x7f2b1af51580, extradata = 0x7f2b1b1bc4e0}}, d_ptr = {d = 0x1b39650}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7f2b1af5a180 "Qt", data = 0x7f2b1af5da20, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7f2b1b1bc4c0, stringdata = 0x7f2b1af639a0 "QEventLoop", data = 0x7f2b1af639c0, extradata = 0x0}}}
        returnCode = <optimized out>
#8  0x00007f2b1994155f in QDeclarativePixmapReader::run (this=0x1b0a620) at util/qdeclarativepixmapcache.cpp:556
No locals.
#9  0x00007f2b1adafd05 in QThreadPrivate::start (arg=0x1b0a620) at thread/qthread_unix.cpp:331
        __clframe = {__cancel_routine = 0x7f2b1adaeda0 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x1b0a620, __do_it = 1, __cancel_type = <optimized out>}
        thr = 0x1b0a620
        data = 0x1b0a7f0
#10 0x00007f2b18739edc in start_thread (arg=0x7f2afb0fe700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7f2afb0fe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -7714745795933021054, 140736589167536, 139822577478080, 0, 3, 7690531387611896962, 7690326777603644546}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#11 0x00007f2b18a3089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#12 0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (Thread 0x7f2af4ae2700 (LWP 2309)):
#0  0x00007f2b18a24773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
        resultvar = <optimized out>
        oldtype = 0
        result = <optimized out>
#1  0x00007f2b17c58078 in g_main_context_poll (n_fds=3, fds=0x1b38300, timeout=-1, context=0x1b4ad20, priority=<optimized out>) at /build/buildd/glib2.0-2.29.90/./glib/gmain.c:3402
        poll_func = 0x7f2b17c66620 <g_poll>
#2  g_main_context_iterate (context=0x1b4ad20, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.29.90/./glib/gmain.c:3084
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = <optimized out>
        fds = 0x1b38300
#3  0x00007f2b17c588a2 in g_main_loop_run (loop=0x1b5c700) at /build/buildd/glib2.0-2.29.90/./glib/gmain.c:3297
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#4  0x00007f2b13e3c7b6 in gdbus_shared_thread_func (user_data=0x1b4acf0) at /build/buildd/glib2.0-2.29.90/./gio/gdbusprivate.c:276
        data = 0x1b4acf0
#5  0x00007f2b17c7d626 in g_thread_create_proxy (data=0x1b4ae10) at /build/buildd/glib2.0-2.29.90/./glib/gthread.c:1962
        thread = 0x1b4ae10
        __PRETTY_FUNCTION__ = "g_thread_create_proxy"
#6  0x00007f2b18739edc in start_thread (arg=0x7f2af4ae2700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7f2af4ae2700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -7714745795933021054, 139822669792608, 139822470408640, 0, 3, 7690563554769460354, 7690326777603644546}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007f2b18a3089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#8  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (Thread 0x7f2b0ad9b700 (LWP 2295)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
No locals.
#1  0x00007f2b15c3bfe2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f2b15f351e0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
No locals.
#2  0x00007f2b15c3c019 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
No locals.
#3  0x00007f2b18739edc in start_thread (arg=0x7f2b0ad9b700) at pthread_create.c:304
        __res = <optimized out>
        pd = 0x7f2b0ad9b700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -7714745795933021054, 139823070592000, 139822842362304, 0, 3, 7690356105164708994, 7690326777603644546}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        robust = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#4  0x00007f2b18a3089d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#5  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 0x7f2b1b3a5dc0 (LWP 2294)):
#0  allocateScriptValuePrivate (this=0x7f2b042adea0, size=64) at api/qscriptengine_p.h:594
        p = 0x401
#1  operator new (engine=0x7f2b042adea0, size=64) at api/qscriptengine_p.h:796
No locals.
#2  scriptValueFromJSCValue (value=..., this=0x7f2b042adea0) at api/qscriptengine_p.h:645
        p_value = 0x401
#3  QScriptValue::call (this=<optimized out>, thisObject=<optimized out>, args=<optimized out>) at api/qscriptvalue.cpp:1616
        d = 0x7f2b042b8ea0
        exec = 0x7f2b0a19b098
        savedException = <optimized out>
        callee = {m_ptr = 0x7f2aff8c8d00}
        callData = {native = {function = {ptr = 0x7f2af53d83f0}}, js = {functionExecutable = 0x7f2af53d83f0, scopeChain = 0x7f2b09a21630}}
        jscThisObject = {m_ptr = 0x7f2b0a144900}
        jscArgs = {m_args = 0x7fffca677340, m_argCount = 0}
        callType = QTJSC::CallTypeJS
        argsVector = {a = 8, s = 0, ptr = 0x7fffca677340, {array = "\000tg\312\377\177\000\000\377\371\306\025+\177\000\000@L9\365*\177\000\000\215\372\303\025+\177", '\000' <repeats 26 times>, "x\324\061\033+\177\000\000\b\006\342\002\000\000\000", q_for_alignment_1 = 140736589165568, q_for_alignment_2 = 6.9533113819580535e-310}}
        result = {m_ptr = 0x7f2aff8fcb40}
#4  0x00007f2b199ff6f5 in QDeclarativeQtScriptExpression::eval (this=0x215bce0, secondaryScope=<optimized out>, isUndefined=0x0) at qml/qdeclarativeexpression.cpp:518
        watcher = {m_wasDeleted = 0x7fffca6774b8, m_wasDeletedStorage = false, m_d = 0x215bce0}
        ep = 0x17494b0
        isShared = false
        engine = <optimized out>
        scriptEngine = 0x17495c0
        oldSharedContext = 0x0
        oldOverride = 0x0
        thisObject = {d_ptr = {d = 0x0}}
        oldSharedScope = 0x0
        svalue = {d_ptr = {d = 0x1749ae0}}
#5  0x00007f2b199ffa61 in QDeclarativeQtScriptExpression::scriptValue (this=0x215bce0, secondaryScope=<optimized out>, isUndefined=<optimized out>) at qml/qdeclarativeexpression.cpp:470
        lastCaptureProperties = false
        value = {d_ptr = {d = 0x17495c0}}
        watcher = {m_wasDeleted = 0x7fffca6774b8, m_wasDeletedStorage = true, m_d = 0x215bce0}
        ep = 0x17494b0
        lastCapturedProperties = {m_count = 0, m_capacity = 0, m_data = 0x0}
#6  0x00007f2b199ffd69 in QDeclarativeExpressionPrivate::scriptValue (this=0x215bc50, secondaryScope=0x0, isUndefined=0x0) at qml/qdeclarativeexpression.cpp:653
No locals.
#7  0x00007f2b199fff02 in QDeclarativeExpressionPrivate::value (this=0x215bc50, secondaryScope=0x0, isUndefined=0x0) at qml/qdeclarativeexpression.cpp:667
        ep = 0x17494b0
#8  0x00007f2b19a38308 in QDeclarativeBoundSignal::qt_metacall (this=0x2297e80, c=<optimized out>, id=<optimized out>, a=0x7fffca677ac0) at qml/qdeclarativeboundsignal.cpp:186
No locals.
#9  0x00007f2b1aea9eba in QMetaObject::activate (sender=0x1ff4140, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffca677ac0) at kernel/qobject.cpp:3278
        receiverInSameThread = <optimized out>
        previousSender = 0x0
        receiver = 0x2297e80
        method = 4
        currentSender = {sender = 0x1ff4140, signal = 34, ref = 0}
        c = 0x228e8b0
        last = 0x228e8b0
        methodOffset = 32
        signal_absolute_index = 34
        empty_argv = {0x0}
        currentThreadData = 0x16d7bb0
        locker = {val = 24750528}
        connectionLists = 0x213a5f0
        signalOffset = 25
        signal_index = <optimized out>
#10 0x00007f2b199ebeca in QDeclarativeVMEMetaObject::metaCall (this=0x2e56c20, c=<optimized out>, _id=34, a=0x7fffca677ac0) at qml/qdeclarativevmemetaobject.cpp:639
        plainSignals = <optimized out>
        id = 2
#11 0x00007f2b199eb90c in QDeclarativeVMEMetaObject::metaCall (this=0x1af5cd0, c=QMetaObject::InvokeMetaMethod, _id=34, a=0x7fffca677ac0) at qml/qdeclarativevmemetaobject.cpp:673
        id = 34
#12 0x00007f2b19a98dc5 in QDeclarativeObjectMethodScriptClass::callMethod (this=0x1770af0, object=0x1ff4140, index=34, returnType=0, argCount=0, argTypes=0x0, ctxt=0x7f2b0a19b098) at qml/qdeclarativeobjectscriptclass.cpp:937
        args = {0x0}
#13 0x00007f2b19a9a59b in QDeclarativeObjectMethodScriptClass::callPrecise (this=0x1770af0, object=0x1ff4140, data=..., ctxt=0x7f2b0a19b098) at qml/qdeclarativeobjectscriptclass.cpp:897
No locals.
#14 0x00007f2b19a9b29b in QDeclarativeObjectMethodScriptClass::call (this=<optimized out>, o=<optimized out>, ctxt=<optimized out>) at qml/qdeclarativeobjectscriptclass.cpp:866
        method = <optimized out>
#15 0x00007f2b15cb3849 in QScript::DeclarativeObjectDelegate::call (exec=<optimized out>, callee=0x7f2aff8c8c40, thisValue=<optimized out>, args=...) at bridge/qscriptdeclarativeobject.cpp:154
        obj = 0x7f2aff8c8c40
        scriptClass = 0x1770af0
        eng_p = 0x1749ae0
        scriptObject = {d_ptr = {d = 0x7f2b04049510}}
        delegate = 0x204a600
        saveFrame = {engine = 0x1749ae0, oldFrame = 0x1749f88}
        ctxt = 0x7f2b0a19b098
        result = {dummy = "\002\000\000\000\000\000\377\377"}
#16 0x00007f2b15bb44d0 in QTJSC::NativeFuncWrapper::operator() (this=0x7fffca677ff0, exec=0x7f2b0a19b098, jsobj=0x7f2aff8c8c40, thisValue=..., argList=...) at ../3rdparty/javascriptcore/JavaScriptCore/runtime/CallData.cpp:46
        debugger = 0x0
        returnValue = {m_ptr = 0xffff000000000002}
#17 0x00007f2b15b8b026 in QTJSC::cti_op_call_NotJSFunction (args=0x7fffca678040) at ../3rdparty/javascriptcore/JavaScriptCore/jit/JITStubs.cpp:1771
        thisValue = <optimized out>
        callFrame = 0x7fffca677108
        argv = <optimized out>
        returnValue = {m_ptr = 0x2}
        argCount = 2
        previousCallFrame = 0x7f2b0a19b048
        argList = {m_args = 0x7f2b0a19b058, m_argCount = 0}
        funcVal = {m_ptr = 0x7f2aff8c8c40}
        callData = {native = {function = {ptr = 0x7f2b15cb3650 <QScript::DeclarativeObjectDelegate::call(QTJSC::ExecState*, QTJSC::JSObject*, QTJSC::JSValue, QTJSC::ArgList const&)>}}, js = {functionExecutable = 0x7f2b15cb3650, scopeChain = 0x0}}
        callType = <optimized out>
        callFrame = <optimized out>
        stackFrame = @0x7fffca678040
        codeBlock = 0xffff000000000000
        vPCIndex = <optimized out>
#18 0x00007f2b0999f611 in ?? ()
No symbol table info available.
#19 0x0000000000000000 in ?? ()
No symbol table info available.