#0  __GI_raise (sig=<optimized out>) at ../sysdeps/unix/sysv/linux/raise.c:50
  [Error: raise.c was not found in source tree]
#1  0x000055f14513752a in dump_gjs_stack_on_signal_handler ()
#2  <signal handler called>
#3  0x00007f6650050c2d in g_type_check_instance () from /tmp/apport_sandbox_r3icgs61/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#4  0x00007f6650044787 in g_signal_connect_data () from /tmp/apport_sandbox_r3icgs61/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#5  0x00007f664f35a679 in meta_window_ensure_close_dialog (window=0x55f146c6d270) at ../src/core/delete.c:55
  [Error: delete.c was not found in source tree]
#6  meta_window_set_alive (window=0x55f146c6d270, is_alive=<optimized out>) at ../src/core/delete.c:69
  [Error: delete.c was not found in source tree]
#7  0x00007f664f35ad4b in meta_display_ping_timeout (data=0x55f14932a8f0) at ../src/core/display.c:2144
  [Error: display.c was not found in source tree]
#8  0x00007f664ff3da28 in g_timeout_dispatch () from /tmp/apport_sandbox_r3icgs61/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f664ff3ce8e in g_main_context_dispatch () from /tmp/apport_sandbox_r3icgs61/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f664ff3d240 in g_main_context_iterate.isra () from /tmp/apport_sandbox_r3icgs61/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f664ff3d533 in g_main_loop_run () from /tmp/apport_sandbox_r3icgs61/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f664f368c10 in meta_run () at ../src/core/main.c:676
#13 0x000055f145136d7d in main ()