#0  sem_post () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S:33
No locals.
#1  0x00007f76434227f9 in PyThread_release_lock () from /tmp/apport_sandbox_uP17lo/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0
No symbol table info available.
#2  0x00007f76733927d8 in g_datalist_clear (datalist=0x0) at /build/buildd/glib2.0-2.37.1/./glib/gdataset.c:277
        data = 0x3b6af70
        i = 0
        __PRETTY_FUNCTION__ = "g_datalist_clear"
#3  0x00007f767367919d in g_object_finalize (object=0x7f761802d070) at /build/buildd/glib2.0-2.37.1/./gobject/gobject.c:1019
No locals.
#4  0x00007f767367903a in g_object_unref (_object=0x7f761802d070) at /build/buildd/glib2.0-2.37.1/./gobject/gobject.c:3189
        weak_locations = <optimized out>
        object = 0x7f761802d070
        old_ref = 1
        __PRETTY_FUNCTION__ = "g_object_unref"
#5  0x00007f76733d22e6 in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.37.1/./glib/gthreadpool.c:309
        task = 0x7f761802d070
        pool = 0x2d35dd0
#6  0x00007f76733d1925 in g_thread_proxy (data=0x35d99e0) at /build/buildd/glib2.0-2.37.1/./glib/gthread.c:798
        thread = 0x35d99e0
#7  0x00007f767314ff8e in start_thread (arg=0x7f75ff7fe700) at pthread_create.c:311
        __res = <optimized out>
        pd = 0x7f75ff7fe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140144774473472, 9175126919668382707, 0, 140146730397792, 140736980297344, 4096, -9097438725367579661, -9099382877868835853}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#8  0x00007f7672e79e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.