(gdb) bt
#0  0x00007ffff540fbf9 in __GI___poll (fds=0x7fffffffce48, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff1156747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ffff115845a in xcb_wait_for_special_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fffc7dda5eb in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#4  0x00007fffc7dda738 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#5  0x00007fffc7ddb90e in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#6  0x00007fffc7ddc889 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#7  0x00007fffc6566009 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#8  0x00007fffc6566321 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#9  0x00007fffc6561789 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#10 0x00005555558008e3 in Urho3D::Graphics::Clear(Urho3D::FlagSet<Urho3D::ClearTarget, void>, Urho3D::Color const&, float, unsigned int) ()
#11 0x00005555557bb5e4 in Urho3D::Renderer::Render() ()
#12 0x00005555558b26b5 in Urho3D::Engine::Render() ()
#13 0x00005555558b31ae in Urho3D::Engine::RunFrame() ()
#14 0x00007ffff678f5b5 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007ffff679c027 in QTimer::timeout(QTimer::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007ffff679c388 in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007ffff67900db in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007ffff74de82c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007ffff74e60f4 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007ffff67609a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007ffff67b8d8e in QTimerInfoList::activateTimers() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007ffff67b9589 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007ffff3eda417 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ffff3eda650 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007ffff3eda6dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007ffff67b98ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007ffff675e9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
---Type <return> to continue, or q <return> to quit---
#28 0x00007ffff6767a84 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x0000555555648f42 in Weaver::Start() ()
#30 0x00005555558cf82d in Urho3D::Application::Run() ()
#31 0x00005555555d81cb in main ()