#0  0x00007f42f0c37bcc in g_object_unref (_object=0xaaaaaaaaaaaaaaaa) at /build/buildd/glib2.0-2.37.6/./gobject/gobject.c:3099
        object = 0xaaaaaaaaaaaaaaaa
        old_ref = <optimized out>
        __PRETTY_FUNCTION__ = "g_object_unref"
        __FUNCTION__ = "g_object_unref"
#1  0x000000000045128c in hostname_proxy_new_cb (source_object=<optimized out>, res=<optimized out>, user_data=0x160c9b0) at nautilus-places-sidebar.c:3264
        _pp = 0x160cae8
        _p = <optimized out>
        sidebar = 0x160c9b0
        error = 0x1b72610
#2  0x00007f42f0ee6b0e in run_in_thread (job=<optimized out>, c=<optimized out>, _data=0x451240 <hostname_proxy_new_cb>) at /build/buildd/glib2.0-2.37.6/./gio/gsimpleasyncresult.c:879
        data = 0x451240 <hostname_proxy_new_cb>
        simple = 0x160c9b0
        source = 0x7f42a0004870
#3  0x00007f42f0ee6b7c in g_simple_async_result_complete (simple=0x7f42a0004870) at /build/buildd/glib2.0-2.37.6/./gio/gsimpleasyncresult.c:762
        __inst = 0x7f42a0004870
        __t = 12297829382473034410
        __r = <optimized out>
        _g_boolean_var_ = <optimized out>
        current_source = <optimized out>
        current_context = <optimized out>
        __PRETTY_FUNCTION__ = "g_simple_async_result_complete"
#4  0x00007fff62e2bf50 in ?? ()
No symbol table info available.
#5  0x00007f42f0968200 in g_main_context_ref_thread_default () at /build/buildd/glib2.0-2.37.6/./glib/gmain.c:824
        context = 0xaaaaaaaaaaaaaaaa
#6  0x00007fff62e2bf40 in ?? ()
No symbol table info available.
#7  0x00007fff62e2bf48 in ?? ()
No symbol table info available.
#8  0x00007f42a0004870 in ?? ()
No symbol table info available.
#9  0x00007f42f0ee6b60 in ?? () at /build/buildd/glib2.0-2.37.6/./gio/gsimpleasyncresult.c:866 from /tmp/apport_sandbox_xPyGjV/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
        g_simple_async_result_parent_class = 0x1400800
        GSimpleAsyncResult_private_offset = 0
#10 0x0000000001f479d0 in ?? ()
No symbol table info available.
#11 0x0000000000000000 in ?? ()
No symbol table info available.