(gdb) bt
#0  0x00007ffff3f43295 in raise () from /usr/lib/libc.so.6
#1  0x00007ffff3f446da in abort () from /usr/lib/libc.so.6
#2  0x00007ffff3f3c297 in __assert_fail_base () from /usr/lib/libc.so.6
#3  0x00007ffff3f3c342 in __assert_fail () from /usr/lib/libc.so.6
#4  0x00007ffff31dc98c in ?? () from /usr/lib/libX11.so.6
#5  0x00007ffff31dd878 in _XReply () from /usr/lib/libX11.so.6
#6  0x00007ffff31d911d in XSync () from /usr/lib/libX11.so.6
#7  0x00007ffff31d91bb in ?? () from /usr/lib/libX11.so.6
#8  0x00007ffff31e01af in ?? () from /usr/lib/libX11.so.6
#9  0x00007ffff36ee1a2 in XShmCreatePixmap () from /usr/lib/libXext.so.6
#10 0x00007ffff64a4d97 in _cairo_xlib_shm_surface_create (other=0xa1bcb0, format=PIXMAN_x8r8g8b8, width=6airo-xlib-surface-shm.c:842
#11 0x00007ffff64a5b41 in _cairo_xlib_surface_create_shm (other=0xa1bcb0, format=PIXMAN_x8r8g8b8, width=6
#12 0x00007ffff64a5bcd in _cairo_xlib_surface_create_similar_shm (other=0xa1bcb0, format=CAIRO_FORMAT_RGBc:1180
#13 0x00007ffff64faf21 in INT_cairo_surface_create_similar_image (other=0xa1bcb0, format=CAIRO_FORMAT_RGB
#14 0x00007ffff71036fc in gdk_window_create_similar_image_surface (window=0x981720, format=CAIRO_FORMAT_R10201
#15 0x00007ffff7131c76 in gdk_cairo_surface_create_from_pixbuf (pixbuf=0x7fffb80190a0, scale=1, for_windo
#16 0x0000000000413256 in load_animation (media=0x2aebd00, input_stream=0x7fffb8005c30) at ../src/MediaDo
#17 cb_media_downloader_load_threaded (media=0x2aebd00, downloader=<optimized out>) at ../src/MediaDownlo
#18 load_in_thread (task=0x2adf430, source_object=<optimized out>, task_data=0x2aebd00, cancellable=<opti
#19 0x00007ffff548bd7f in g_task_thread_pool_thread (thread_data=0x2adf430, pool_data=0x0) at gtask.c:130
#20 0x00007ffff42ef99a in g_thread_pool_thread_proxy (data=0x91c610) at gthreadpool.c:307
#21 0x00007ffff42f9a6f in g_thread_proxy (data=0x2942f70) at gthread.c:784
#22 0x00007ffff086c484 in start_thread () from /usr/lib/libpthread.so.0
#23 0x00007ffff3ff76dd in clone () from /usr/lib/libc.so.6