Thread 1 "GoldenCheetah" received signal SIGSEGV, Segmentation fault.
0x00007f80fe278a6b in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
(gdb) bt
#0  0x00007f80fe278a6b in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f8107215bc6 in QWidget::~QWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#2  0x000055e566ffd238 in CustomMetricsPage::~CustomMetricsPage() ()
#3  0x00007f80fe278a6e in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8107215bc6 in QWidget::~QWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#5  0x00007f81073935fd in QStackedWidget::~QStackedWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#6  0x00007f80fe278a6e in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8107215bc6 in QWidget::~QWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f81073b737d in QTabWidget::~QTabWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f80fe278a6e in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f8107215bc6 in QWidget::~QWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x000055e566ff46d2 in MetricConfig::~MetricConfig() ()
#12 0x00007f80fe278a6e in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f8107215bc6 in QWidget::~QWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007f81073935fd in QStackedWidget::~QStackedWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f80fe278a6e in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f8107215bc6 in QWidget::~QWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f8107215f1d in QWidget::~QWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f80fe278a6e in QObjectPrivate::deleteChildren() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f8107215bc6 in QWidget::~QWidget() () at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x000055e566c834fd in ConfigDialog::~ConfigDialog() ()
#21 0x00007f80fe27b1c3 in QObject::event(QEvent*) () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f81071d7713 in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
    at /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f80fe24de3a in QCoreApplication::notifyInternal2(QObject*, QEvent*) ()
    at /lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f80fe250f27 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) ()
    at /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f80fe2a7a67 in  () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f80f9b22d3b in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f80f9b776c8 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f80f9b203e3 in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f80fe2a70b8 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f80fe24c75b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
    at /lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f80fe254cf4 in QCoreApplication::exec() () at /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x000055e5666cc2e9 in main ()