#0  0x000000000049c60b in setup_context (registry=<synthetic pointer>, module=<synthetic pointer>, lineno=<synthetic pointer>, filename=<synthetic pointer>, stack_level=1) at ../Python/_warnings.c:449
        globals = <optimized out>
        f = <optimized out>
#1  do_warn (message="IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed", category=<type at remote 0x1376550>, stack_level=1) at ../Python/_warnings.c:594
        filename = <optimized out>
        module = <optimized out>
        registry = <optimized out>
        res = <optimized out>
        lineno = <optimized out>
#2  0x000000000049ca8d in PyErr_WarnEx (category=<type at remote 0x1376550>, text=<optimized out>, stack_level=1) at ../Python/_warnings.c:720
        res = <optimized out>
        message = "IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed"
#3  0x00007fd67391d284 in _log_func (log_domain=<optimized out>, log_level=G_LOG_LEVEL_CRITICAL, message=0x16f2750 "IA__gtk_widget_style_get: assertion `GTK_IS_WIDGET (widget)' failed", user_data=0x1376550) at /build/buildd/pygobject-2-2.28.6/gobject/gobjectmodule.c:2353
        state = PyGILState_LOCKED
        warning = <type at remote 0x1376550>
#4  0x00007fd678cb92db in ?? ()
No symbol table info available.
#5  0x0000000001680a30 in ?? ()
No symbol table info available.
#6  0x0000000000000005 in ?? ()
No symbol table info available.
#7  0x00007fd678f60840 in ?? ()
No symbol table info available.
#8  0x00000000016f2750 in ?? ()
No symbol table info available.
#9  0x00007fd67310117b in ?? () from /tmp/tmp0DLgNm/usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
No symbol table info available.
#10 0x0000000001376550 in ?? ()
No symbol table info available.
#11 0x00007fd67391d240 in ?? () at /build/buildd/pygobject-2-2.28.6/gobject/gobjectmodule.c:93 from /tmp/tmp0DLgNm/usr/lib/python2.7/dist-packages/gobject/_gobject.so
No symbol table info available.
#12 0x0000000800000000 in ?? ()
No symbol table info available.
#13 0x0000000000000000 in ?? ()
No symbol table info available.