.
Thread 4 (LWP 4624):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
#1  0x00007fbb78b78ea5 in g_system_thread_new (thread_func=0x1, stack_size=140443225379488, error=0x5d144835) at /build/buildd/glib2.0-2.35.7/./glib/gthread-posix.c:1116
        thread = 0x7fbb7c895ba8
        attr = {__size = "\230:\000\000\000\000\000\000\270[\211|\273\177\000\000\240[\211|\273\177\000\000\021\371\260x\273\177\000\000\240[\211|\273\177\000\000\300\341\344\000\000\000\000\000uf/\\\000\000\000", __align = 15000}
        ret = <optimized out>
        __PRETTY_FUNCTION__ = "g_system_thread_new"
#2  0x00007fbb78b5dd62 in g_thread_pool_push (pool=<optimized out>, data=<optimized out>, error=<optimized out>) at /build/buildd/glib2.0-2.35.7/./glib/gthreadpool.c:571
        real = <optimized out>
        result = <optimized out>
        __PRETTY_FUNCTION__ = "g_thread_pool_push"
#3  0x00007fbb78b5d565 in g_thread_self () at /build/buildd/glib2.0-2.35.7/./glib/gthread.c:1001
        thread = 0xfffffffffffffdfc
#4  0x00007fbb36bad700 in ?? ()
No symbol table info available.
#5  0x00007fbb36bad700 in ?? ()
No symbol table info available.
#6  0x53e4a5f924d20e12 in ?? ()
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 4620):
#0  0x00007fbb782bf39d in ?? () from /tmp/apport_sandbox_zNrvo0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 4619):
#0  0x00007fbb782bf39d in ?? () from /tmp/apport_sandbox_zNrvo0/lib/x86_64-linux-gnu/libc.so.6
No symbol table info available.
#1  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 1 (LWP 4617):
#0  0x00007fbb34ccc7f9 in ?? ()
No symbol table info available.
#1  0x00007fbb000001e3 in ?? ()
No symbol table info available.
#2  0x00007fbb78e1e084 in lookup_type_node_I (utype=0) at /build/buildd/glib2.0-2.35.7/./gobject/gtype.c:394
No locals.
#3  g_type_free_instance (instance=0x0) at /build/buildd/glib2.0-2.35.7/./gobject/gtype.c:1938
        node = 0x0
        class = 0xffffffff
        __PRETTY_FUNCTION__ = "g_type_free_instance"
#4  0x00007fbb78dfee31 in g_cclosure_marshal_VOID__LONGv (closure=0x7fbb7c455d40, return_value=<optimized out>, instance=0x7fbb7c455c50, args=<optimized out>, marshal_data=0x7fbb355c9070, n_params=1, param_types=0x7fbb7c8effb0) at /build/buildd/glib2.0-2.35.7/./gobject/gmarshal.c:546
        cc = 0x7fbb7c455d40
        data1 = <optimized out>
        data2 = <optimized out>
        callback = <optimized out>
        arg0 = 4294967291
        args_copy = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7ffffc35bf70, reg_save_area = 0x7ffffc35beb0}}
#5  0x00007fbb78dfcc97 in g_cclosure_new_swap (callback_func=0x0, user_data=0xfffffffb, destroy_data=0x7fbb7c455c50) at /build/buildd/glib2.0-2.35.7/./gobject/gclosure.c:940
        closure = <optimized out>
        __PRETTY_FUNCTION__ = "g_cclosure_new_swap"
#6  0x00007fbb7c8effb0 in ?? ()
No symbol table info available.
#7  0x00007fbb7cadd030 in ?? ()
No symbol table info available.
#8  0x0000000000000000 in ?? ()
No symbol table info available.