Q_ASSERT() in FlatModel::added when opening qtcreator.qbs

Thread 1 (Thread 0x7ffff7fc67c0 (LWP 6865)):
#0  0x00007ffff475bf89 in raise () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007ffff475f398 in abort () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#2  0x00007ffff58e7495 in QMessageLogger::fatal(char const*, ...) const () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#3  0x00007ffff58e23a4 in qt_assert(char const*, char const*, int) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#4  0x00007fffe21fa4a9 in ProjectExplorer::Internal::FlatModel::added (this=0x10a2740, parentNode=0x1531550, newNodeList=...) at /home/nik/dev/creator/creator-master/src/plugins/projectexplorer/projectmodels.cpp:616
        parentIndex = {r = 0, c = 0, i = 22222160, m = 0x10a2740}
        it = {i = 0x1040880}
        oldNodeList = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x17aaf60}, d = 0x17aaf60}}
        oldIter = {i = 0x17aaf70}
        newIter = {i = 0x17aa820}
        emptyDifference = {q_hash = {{d = 0x17ab4e0, e = 0x17ab4e0}}}
#5  0x00007fffe21fba3c in ProjectExplorer::Internal::FlatModel::foldersAdded (this=0x10a2740) at /home/nik/dev/creator/creator-master/src/plugins/projectexplorer/projectmodels.cpp:800
        folderNode = 0x1531550
        newNodeList = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x17aa810}, d = 0x17aa810}}
#6  0x00007fffe23088c4 in ProjectExplorer::Internal::FlatModel::qt_static_metacall (_o=0x10a2740, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x7fffffffc050) at .moc/debug-shared/moc_projectmodels.cpp:143
        _t = 0x10a2740
#7  0x00007ffff5b4e2be in QMetaObject::activate(QObject*, int, int, void**) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#8  0x00007fffe23048eb in ProjectExplorer::NodesWatcher::foldersAdded (this=0x10a1770) at .moc/debug-shared/moc_projectnodes.cpp:809
No locals.
#9  0x00007fffe21d7791 in ProjectExplorer::FolderNode::addFolderNodes (this=0x17a7e30, subFolders=...) at /home/nik/dev/creator/creator-master/src/plugins/projectexplorer/projectnodes.cpp:472
        watcher = 0x10a1770
        _container_ = {c = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x16dfd80}, d = 0x16dfd80}}, brk = 0, i = {i = 0x16dfd90}, e = {i = 0x16dfda0}}
        pn = 0x1531550
#10 0x00007fffd45dcca1 in QbsProjectManager::Internal::QbsGroupNode::setupFolder (root=0x17a7e30, fileTree=0x17aa160, baseDir=..., updateExisting=false) at /home/nik/dev/creator/creator-master/src/plugins/qbsprojectmanager/qbsnodes.cpp:527
        fn = 0x17aa940
        path = {static null = {<No data fields>}, d = 0x17aa8b0}
        c = 0x17aa730
        _container_ = {c = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x17aa190}, d = 0x17aa190}}, brk = 0, i = {i = 0x17aa1a0}, e = {i = 0x17aa1b0}}
        filesToRemove = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7ffff5bd3db0 <QListData::shared_null>}, d = 0x7ffff5bd3db0 <QListData::shared_null>}}
        filesToAdd = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7ffff5bd3db0 <QListData::shared_null>}, d = 0x7ffff5bd3db0 <QListData::shared_null>}}
        foldersToRemove = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7ffff5bd3db0 <QListData::shared_null>}, d = 0x7ffff5bd3db0 <QListData::shared_null>}}
#11 0x00007fffd45dce22 in QbsProjectManager::Internal::QbsGroupNode::setupFolder (root=0x16464d0, fileTree=0x7fffffffc930, baseDir=..., updateExisting=false) at /home/nik/dev/creator/creator-master/src/plugins/qbsprojectmanager/qbsnodes.cpp:535
        fn = 0x17a7e30
        path = {static null = {<No data fields>}, d = 0x17a8370}
        c = 0x17aa160
        _container_ = {c = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x17aa760}, d = 0x17aa760}}, brk = 0, i = {i = 0x17aa788}, e = {i = 0x17aa7a0}}
        filesToRemove = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7ffff5bd3db0 <QListData::shared_null>}, d = 0x7ffff5bd3db0 <QListData::shared_null>}}
        filesToAdd = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7ffff5bd3db0 <QListData::shared_null>}, d = 0x7ffff5bd3db0 <QListData::shared_null>}}
        foldersToRemove = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7ffff5bd3db0 <QListData::shared_null>}, d = 0x7ffff5bd3db0 <QListData::shared_null>}}
#12 0x00007fffd45dc22b in QbsProjectManager::Internal::QbsGroupNode::setupFiles (root=0x16464d0, files=..., productPath=..., updateExisting=false) at /home/nik/dev/creator/creator-master/src/plugins/qbsprojectmanager/qbsnodes.cpp:468
        tree = {children = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x17aa760}, d = 0x17aa760}}, parent = 0x0, name = {static null = {<No data fields>}, d = 0x7ffff5bd17a0 <QArrayData::shared_null>}, m_isFile = false}
#13 0x00007fffd45e0bb5 in QbsProjectManager::Internal::QbsRootProjectNode::update (this=0x1531550) at /home/nik/dev/creator/creator-master/src/plugins/qbsprojectmanager/qbsnodes.cpp:826
        buildSystemFiles = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x17ac660}, d = 0x17ac660}}, <No data fields>}
        projectBuildSystemFiles = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x17aa0a0}, d = 0x17aa0a0}}, <No data fields>}
        base = {<QString> = {static null = {<No data fields>}, d = 0x17aa300}, <No data fields>}
#14 0x00007fffd45edcff in QbsProjectManager::Internal::QbsProject::readQbsData (this=0x1613550) at /home/nik/dev/creator/creator-master/src/plugins/qbsprojectmanager/qbsproject.cpp:452
        project = {d = {d = 0x7fffffffcb20}}
        data = {d = {d = 0x7fffffffcac0}}
#15 0x00007fffd45ed781 in QbsProjectManager::Internal::QbsProject::handleQbsParsingDone (this=0x1613550, success=true) at /home/nik/dev/creator/creator-master/src/plugins/qbsprojectmanager/qbsproject.cpp:383
        projectData = @0x7fffffffcb20: {d = {d = 0x1045fc0}}
        cancelStatus = QbsProjectManager::Internal::QbsProject::CancelStatusNone
#16 0x00007fffd460d848 in QbsProjectManager::Internal::QbsProject::qt_static_metacall (_o=0x1613550, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x7fffffffccf0) at .moc/debug-shared/moc_qbsproject.cpp:115
        _t = 0x1613550
#17 0x00007ffff5b4e2be in QMetaObject::activate(QObject*, int, int, void**) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#18 0x00007fffd460ea1d in QbsProjectManager::Internal::QbsProjectParser::done (this=0x14923c0, _t1=true) at .moc/debug-shared/moc_qbsprojectparser.cpp:146
        _a = {0x0, 0x7fffffffcd07}
#19 0x00007fffd4602021 in QbsProjectManager::Internal::QbsProjectParser::handleQbsParsingDone (this=0x14923c0, success=true) at /home/nik/dev/creator/creator-master/src/plugins/qbsprojectmanager/qbsprojectparser.cpp:139
No locals.
#20 0x00007fffd460e900 in QbsProjectManager::Internal::QbsProjectParser::qt_static_metacall (_o=0x14923c0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fffffffcf20) at .moc/debug-shared/moc_qbsprojectparser.cpp:89
        _t = 0x14923c0
#21 0x00007ffff5b4e2be in QMetaObject::activate(QObject*, int, int, void**) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#22 0x00007fffd42a9071 in qbs::AbstractJob::finished (this=0x1621570, _t1=true, _t2=0x1621570) at moc_jobs.cpp:242
        _a = {0x0, 0x7fffffffcf47, 0x7fffffffcf38}
#23 0x00007fffd40e68d4 in qbs::AbstractJob::handleFinished (this=0x1621570) at /home/nik/dev/creator/creator-master/src/shared/qbs/src/lib/corelib/api/jobs.cpp:193
No locals.
#24 0x00007fffd42a8be0 in qbs::AbstractJob::qt_static_metacall (_o=0x1621570, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0x7fffffffd150) at moc_jobs.cpp:116
        _t = 0x1621570
#25 0x00007ffff5b4e2be in QMetaObject::activate(QObject*, int, int, void**) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#26 0x00007fffd42a765f in qbs::Internal::InternalJob::finished (this=0x15afae0, _t1=0x15afae0) at moc_internaljobs.cpp:160
        _a = {0x0, 0x7fffffffd160}
#27 0x00007fffd40d049a in qbs::Internal::InternalJobThreadWrapper::handleFinished (this=0x15afae0) at /home/nik/dev/creator/creator-master/src/shared/qbs/src/lib/corelib/api/internaljobs.cpp:194
No locals.
#28 0x00007fffd42a79db in qbs::Internal::InternalJobThreadWrapper::qt_static_metacall (_o=0x15afae0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7ffefac406c0) at moc_internaljobs.cpp:238
        _t = 0x15afae0
#29 0x00007ffff5b4ef56 in QObject::event(QEvent*) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#30 0x00007ffff6ef9bac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /home/nik/usr/qt-5.3.1/lib/libQt5Widgets.so.5
No symbol table info available.
#31 0x00007ffff6efec36 in QApplication::notify(QObject*, QEvent*) () from /home/nik/usr/qt-5.3.1/lib/libQt5Widgets.so.5
No symbol table info available.
#32 0x00007ffff5b1f375 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#33 0x00007ffff5b211c7 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#34 0x00007ffff5b76c13 in ?? () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#35 0x00007ffff28cfe04 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#36 0x00007ffff28d0048 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#37 0x00007ffff28d00ec in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#38 0x00007ffff5b7608c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#39 0x00007ffff5b1d28b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#40 0x00007ffff5b248e6 in QCoreApplication::exec() () from /home/nik/usr/qt-5.3.1/lib/libQt5Core.so.5
No symbol table info available.
#41 0x000000000040edd5 in main (argc=3, argv=0x7fffffffe418) at /home/nik/dev/creator/creator-master/src/app/main.cpp:535
        app = {<QApplication> = {<No data fields>}, static staticMetaObject = {d = {superdata = 0x7ffff7592c00 <QApplication::staticMetaObject>, stringdata = 0x415f70 <qt_meta_stringdata_SharedTools__QtSingleApplication>, data = 0x416100 <qt_meta_data_SharedTools__QtSingleApplication>, static_metacall = 0x414430 <SharedTools::QtSingleApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, firstPeer = 24261, instances = 0x697bf0, pidPeer = 0x697fe0, actWin = 0x0, appId = {static null = {<No data fields>}, d = 0x61e600}, block = false}
        threadCount = 12
        settingsPath = {static null = {<No data fields>}, d = 0x698030}
        customPluginPaths = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7ffff5bd3db0 <QListData::shared_null>}, d = 0x7ffff5bd3db0 <QListData::shared_null>}}, <No data fields>}
        arguments = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x698ac0}, d = 0x698ac0}}, <No data fields>}
        it = {c = 0x7fffffffe260, i = {i = 0x698ae0}, n = {i = 0x698ae0}}
        testOptionProvided = false
        settings = 0x697cd0
        globalSettings = 0x697cf0
        pluginManager = {<QObject> = {<No data fields>}, static staticMetaObject = {d = {superdata = 0x7ffff5f75f20 <QObject::staticMetaObject>, stringdata = 0x7ffff7bc5580 <qt_meta_stringdata_ExtensionSystem__PluginManager>, data = 0x7ffff7bc5750 <qt_meta_data_ExtensionSystem__PluginManager>, static_metacall = 0x7ffff7bc1860 <ExtensionSystem::PluginManager::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        translator = <incomplete type>
        qtTranslator = <incomplete type>
        uiLanguages = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x69cfe0}, d = 0x69cfe0}}, <No data fields>}
        overrideLanguage = {static null = {<No data fields>}, d = 0x7ffff5bd17a0 <QArrayData::shared_null>}
        creatorTrPath = @0x7fffffffe070: {static null = {<No data fields>}, d = 0x6a41a0}
        proxyUrl = {d = 0x69c200}
        pluginPaths = {<QList<QString>> = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x6a4120}, d = 0x6a4120}}, <No data fields>}
        foundAppOptions = {d = 0x7ffff5c11040 <QMapDataBase::shared_null>}
        plugins = {{p = {static shared_null = {ref = {atomic = {_q_value = -1}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x6d96b0}, d = 0x6d96b0}}
        coreplugin = 0x6beb30
        pid = -1
        isBlock = false
        r = 0