smooker@sw1 ~ $ freecad.sh 
FreeCAD 0.19, Libs: 0.19R21623 (Git)
© Juergen Riegel, Werner Mayer, Yorik van Havre and others 2001-2020
FreeCAD is free and open-source software licensed under the terms of LGPL2+ license.
FreeCAD wouldn't be possible without FreeCAD community.
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connect failed: No such file or directory
Program received signal SIGSEGV, Segmentation fault.
#0  /lib64/libc.so.6(+0x38450) [0x7f84e820b450]
#1  0x7f84ebc25f56 in App::Document::isPerformingTransaction() const from /mnt/wd/smooker/src/FreeCAD-build/lib/libFreeCADApp.so+0xc
0000002  0x7f8479afa096 in Sketcher::SketchObject::onChanged(App::Property const*) from /mnt/wd/smooker/src/FreeCAD-build/Mod/Sketcher/Sketcher.so+0x140
0000003  0x7f84ebe74997 in App::Property::hasSetValue() from /mnt/wd/smooker/src/FreeCAD-build/lib/libFreeCADApp.so+0x65
0000004  0x7f84c657ea44 in Part::PropertyGeometryList::setValues(std::vector<Part::Geometry*, std::allocator<Part::Geometry*> > const&) from /mnt/wd/smooker/src/FreeCAD-build/Mod/Part/Part.so+0x13a
0000005  0x7f8479ad22c9 in Sketcher::SketchObject::addGeometry(std::vector<Part::Geometry*, std::allocator<Part::Geometry*> > const&, bool) from /mnt/wd/smooker/src/FreeCAD-build/Mod/Sketcher/Sketcher.so+0x251
0000006  0x7f84792243a1 in CmdSketcherMirrorSketch::activated(int) from /mnt/wd/smooker/src/FreeCAD-build/Mod/Sketcher/SketcherGui.so+0x4fd
0000007  0x7f84ed27418a in Gui::Command::invoke(int, Gui::Command::TriggerSource) from /mnt/wd/smooker/src/FreeCAD-build/lib/libFreeCADGui.so+0x32e
0000008  0x7f84ed26536a in Gui::Action::onActivated() from /mnt/wd/smooker/src/FreeCAD-build/lib/libFreeCADGui.so+0x26
0000009  /mnt/wd/smooker/src/FreeCAD-build/lib/libFreeCADGui.so(+0x1004b67) [0x7f84ed26ab67]
0000010  /usr/lib64/libQt5Core.so.5(+0x2a5eac) [0x7f84e8d22eac]
0000011  0x7f84e96c0ab2 in QAction::triggered(bool) from /usr/lib64/libQt5Widgets.so.5+0x42
0000012  0x7f84e96c30d8 in QAction::activate(QAction::ActionEvent) from /usr/lib64/libQt5Widgets.so.5+0xa8
0000013  /usr/lib64/libQt5Widgets.so.5(+0x2e2df2) [0x7f84e9845df2]
0000014  /usr/lib64/libQt5Widgets.so.5(+0x2ea40a) [0x7f84e984d40a]
0000015  0x7f84e984e3da in QMenu::mouseReleaseEvent(QMouseEvent*) from /usr/lib64/libQt5Widgets.so.5+0x25a
0000016  0x7f84e9708f7e in QWidget::event(QEvent*) from /usr/lib64/libQt5Widgets.so.5+0x27e
0000017  0x7f84e9850953 in QMenu::event(QEvent*) from /usr/lib64/libQt5Widgets.so.5+0x153
0000018  0x7f84e96c6c9f in QApplicationPrivate::notify_helper(QObject*, QEvent*) from /usr/lib64/libQt5Widgets.so.5+0x7f
0000019  0x7f84e96cffdf in QApplication::notify(QObject*, QEvent*) from /usr/lib64/libQt5Widgets.so.5+0x57f
0000020  0x7f84ed235c92 in Gui::GUIApplication::notify(QObject*, QEvent*) from /mnt/wd/smooker/src/FreeCAD-build/lib/libFreeCADGui.so+0x10e
0000021  0x7f84e8cf01ee in QCoreApplication::notifyInternal2(QObject*, QEvent*) from /usr/lib64/libQt5Core.so.5+0x7e
0000022  0x7f84e96cf0a6 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) from /usr/lib64/libQt5Widgets.so.5+0x1b6
0000023  /usr/lib64/libQt5Widgets.so.5(+0x1c1500) [0x7f84e9724500]
0000024  /usr/lib64/libQt5Widgets.so.5(+0x1c39d4) [0x7f84e97269d4]
0000025  0x7f84e96c6c9f in QApplicationPrivate::notify_helper(QObject*, QEvent*) from /usr/lib64/libQt5Widgets.so.5+0x7f
0000026  0x7f84e96cfd90 in QApplication::notify(QObject*, QEvent*) from /usr/lib64/libQt5Widgets.so.5+0x330
0000027  0x7f84ed235c92 in Gui::GUIApplication::notify(QObject*, QEvent*) from /mnt/wd/smooker/src/FreeCAD-build/lib/libFreeCADGui.so+0x10e
0000028  0x7f84e8cf01ee in QCoreApplication::notifyInternal2(QObject*, QEvent*) from /usr/lib64/libQt5Core.so.5+0x7e
0000029  0x7f84e90dfe6b in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) from /usr/lib64/libQt5Gui.so.5+0x74b
0000030  0x7f84e90e1605 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) from /usr/lib64/libQt5Gui.so.5+0x265
0000031  0x7f84e90bca5a in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib64/libQt5Gui.so.5+0xba
0000032  /usr/lib64/libQt5XcbQpa.so.5(+0x680da) [0x7f84d71850da]
0000033  /usr/lib64/libglib-2.0.so.0(g_main_context_dispatch+0x27c) [0x7f84e719018c]
0000034  /usr/lib64/libglib-2.0.so.0(+0x50408) [0x7f84e7190408]
0000035  /usr/lib64/libglib-2.0.so.0(g_main_context_iteration+0x2f) [0x7f84e719049f]
0000036  0x7f84e8d442a0 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib64/libQt5Core.so.5+0x60
0000037  0x7f84e8cef09b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) from /usr/lib64/libQt5Core.so.5+0x12b
0000038  0x7f84e8cf6e42 in QCoreApplication::exec() from /usr/lib64/libQt5Core.so.5+0x92
#39  0x7f84ed108a76 in Gui::Application::runApplication() from /mnt/wd/smooker/src/FreeCAD-build/lib/libFreeCADGui.so+0x23ec
#40  /mnt/wd/smooker/src/FreeCAD-build/bin/FreeCAD(+0x91f9) [0x55fc6bbb71f9]
0000041  /lib64/libc.so.6(__libc_start_main+0xeb) [0x7f84e81f6d0b]
0000042  /mnt/wd/smooker/src/FreeCAD-build/bin/FreeCAD(+0x84ea) [0x55fc6bbb64ea]
LEAK: 25 Page
LEAK: 25 Frame
LEAK: 32 CachedResource
LEAK: 4 JSLazyEventListener
LEAK: 4992 WebCoreNode
LEAK: 1476 RenderObject