.
Thread 2 (Thread 8551):
#0  0x00007f0d91d40e33 in poll () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f0d9159f104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f0d9159f9f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f0d8e5cdd44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f0d915c63e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f0d934a7d8c in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
No symbol table info available.
#6  0x00007f0d91d4df7d in clone () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (Thread 8549):
#0  0x00007f0d91c9bd05 in raise () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x00007f0d91c9fab6 in abort () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#2  0x00007f0d91cd4d7b in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#3  0x00007f0d91ce008a in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#4  0x00007f0d91ce1472 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#5  0x00007f0d91ce431e in malloc () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#6  0x00007f0d92561e0d in operator new(unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
No symbol table info available.
#7  0x00007f0d92561f29 in operator new[](unsigned long) () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
No symbol table info available.
#8  0x00007f0d946ff30f in QHashData::rehash(int) () from /usr/lib/libQtCore.so.4
No symbol table info available.
#9  0x00007f0d94d0fdd3 in ?? () from /usr/lib/libQtGui.so.4
No symbol table info available.
#10 0x00007f0d94d04f24 in QWidget::~QWidget() () from /usr/lib/libQtGui.so.4
No symbol table info available.
#11 0x00007f0d950bce59 in QLabel::~QLabel() () from /usr/lib/libQtGui.so.4
No symbol table info available.
#12 0x00007f0d947dcc14 in QObjectPrivate::deleteChildren() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#13 0x00007f0d94d04ee2 in QWidget::~QWidget() () from /usr/lib/libQtGui.so.4
No symbol table info available.
#14 0x00007f0d950b9b99 in QGroupBox::~QGroupBox() () from /usr/lib/libQtGui.so.4
No symbol table info available.
#15 0x00007f0d947dcc14 in QObjectPrivate::deleteChildren() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#16 0x00007f0d94d04ee2 in QWidget::~QWidget() () from /usr/lib/libQtGui.so.4
No symbol table info available.
#17 0x00007f0d950b93a9 in QFrame::~QFrame() () from /usr/lib/libQtGui.so.4
No symbol table info available.
#18 0x00007f0d947dcc14 in QObjectPrivate::deleteChildren() () from /usr/lib/libQtCore.so.4
No symbol table info available.
#19 0x00007f0d94d04ee2 in QWidget::~QWidget() () from /usr/lib/libQtGui.so.4
No symbol table info available.
#20 0x00000000004b0a0c in ?? ()
No symbol table info available.
#21 0x00000000004a8c9c in ?? ()
No symbol table info available.
#22 0x0000000000419f5a in ?? ()
No symbol table info available.
#23 0x0000000000419608 in ?? ()
No symbol table info available.
#24 0x00007f0d91c86eff in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#25 0x0000000000418c2a in ?? ()
No symbol table info available.
#26 0x00007ffff5f573e8 in ?? ()
No symbol table info available.
#27 0x000000000000001c in ?? ()
No symbol table info available.
#28 0x0000000000000001 in ?? ()
No symbol table info available.
#29 0x00007ffff5f58a9f in ?? ()
No symbol table info available.
#30 0x0000000000000000 in ?? ()
No symbol table info available.