.
Thread 3 (process 1553):
#0  0x00007f99a336d56d in pthread_cond_timedwait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00007f99a7044615 in ?? () from /usr/lib/libgthread-2.0.so.0
#2  0x00007f99a359471b in ?? () from /usr/lib/libglib-2.0.so.0
#3  0x00007f99a3594815 in g_async_queue_timed_pop ()
   from /usr/lib/libglib-2.0.so.0
#4  0x00007f99a35e2fa5 in ?? () from /usr/lib/libglib-2.0.so.0
#5  0x00007f99a35e1ae4 in ?? () from /usr/lib/libglib-2.0.so.0
#6  0x00007f99a33693ba in start_thread () from /lib/libpthread.so.0
#7  0x00007f99a30d5fcd in clone () from /lib/libc.so.6
#8  0x0000000000000000 in ?? ()
.
Thread 2 (process 1554):
#0  0x00007f99a4883823 in ?? () from /usr/lib/libgio-2.0.so.0
#1  0x00007f99a4843d9e in g_content_type_guess () from /usr/lib/libgio-2.0.so.0
#2  0x00007f99a487aa48 in ?? () from /usr/lib/libgio-2.0.so.0
#3  0x00007f99a487b558 in ?? () from /usr/lib/libgio-2.0.so.0
#4  0x00007f99a48777e6 in ?? () from /usr/lib/libgio-2.0.so.0
#5  0x00000000004a066a in ?? ()
#6  0x00000000004a0de6 in ?? ()
#7  0x00000000004705fd in ?? ()
#8  0x00007f99a35e1ae4 in ?? () from /usr/lib/libglib-2.0.so.0
#9  0x00007f99a33693ba in start_thread () from /lib/libpthread.so.0
#10 0x00007f99a30d5fcd in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()
.
Thread 1 (process 1543):
#0  0x00007f99a35d2233 in g_sequence_iter_get_sequence ()
   from /usr/lib/libglib-2.0.so.0
#1  0x00007f99a5975a6b in gtk_list_store_remove ()
   from /usr/lib/libgtk-x11-2.0.so.0
#2  0x000000000049afe3 in ?? ()
#3  0x00007f99a3a5427d in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#4  0x00007f99a3a69e3b in ?? () from /usr/lib/libgobject-2.0.so.0
#5  0x00007f99a3a6b432 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#6  0x00007f99a3a6b953 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#7  0x00007f99a58d47dd in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#8  0x00007f99a3a5427d in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#9  0x00007f99a3a69723 in ?? () from /usr/lib/libgobject-2.0.so.0
#10 0x00007f99a3a6b432 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#11 0x00007f99a3a6b953 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#12 0x00007f99a58d346d in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#13 0x00007f99a597edf8 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#14 0x00007f99a3a5427d in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#15 0x00007f99a3a69b1e in ?? () from /usr/lib/libgobject-2.0.so.0
#16 0x00007f99a3a6b2bd in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#17 0x00007f99a3a6b953 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#18 0x00007f99a5a8709e in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#19 0x00007f99a5977693 in gtk_propagate_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
#20 0x00007f99a59787b3 in gtk_main_do_event ()
   from /usr/lib/libgtk-x11-2.0.so.0
#21 0x00007f99a55f1f3c in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#22 0x00007f99a35b820a in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
#23 0x00007f99a35bb8e0 in ?? () from /usr/lib/libglib-2.0.so.0
#24 0x00007f99a35bbdad in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#25 0x00007f99a5978bc7 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#26 0x0000000000431ed3 in main ()