#0  0x00007ffff195ee60 in g_base_info_get_type ()
   from /usr/lib/libgirepository-1.0.so.1
#1  0x00007ffff195f3ea in g_callable_info_load_return_type ()
   from /usr/lib/libgirepository-1.0.so.1
#2  0x00007fffbf414b56 in ?? () from /usr/lib/python2.7/site-packages/gi/_gi.so
#3  0x00007fffef1cac90 in ffi_closure_unix64_inner () from /usr/lib/libffi.so.6
#4  0x00007fffef1cb020 in ffi_closure_unix64 () from /usr/lib/libffi.so.6
#5  0x00007ffff0734193 in gst_pad_add_probe ()
   from /usr/lib/libgstreamer-1.0.so.0
#6  0x00007fffef1caeb8 in ffi_call_unix64 () from /usr/lib/libffi.so.6
#7  0x00007fffef1ca820 in ffi_call () from /usr/lib/libffi.so.6
#8  0x00007ffff1960044 in g_callable_info_invoke ()
   from /usr/lib/libgirepository-1.0.so.1
#9  0x00007ffff19613ab in g_function_info_invoke ()
   from /usr/lib/libgirepository-1.0.so.1
#10 0x00007fffbf417adf in ?? () from /usr/lib/python2.7/site-packages/gi/_gi.so
#11 0x00007fffbf708ac4 in PyEval_EvalFrameEx ()
   from /usr/lib/libpython2.7.so.1.0
#12 0x00007fffbf70a280 in PyEval_EvalCodeEx ()
   from /usr/lib/libpython2.7.so.1.0
#13 0x00007fffbf709479 in PyEval_EvalFrameEx ()
   from /usr/lib/libpython2.7.so.1.0
#14 0x00007fffbf70a280 in PyEval_EvalCodeEx ()
   from /usr/lib/libpython2.7.so.1.0
#15 0x00007fffbf699af0 in function_call () from /usr/lib/libpython2.7.so.1.0
#16 0x00007fffbf675c13 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#17 0x00007fffbf68441d in instancemethod_call ()
   from /usr/lib/libpython2.7.so.1.0
#18 0x00007fffbf675c13 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#19 0x00007fffbf7040c7 in PyEval_CallObjectWithKeywords ()
   from /usr/lib/libpython2.7.so.1.0
#20 0x00007fffbf415d20 in ?? () from /usr/lib/python2.7/site-packages/gi/_gi.so
#21 0x00007ffff751e458 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#22 0x00007ffff752f40d in ?? () from /usr/lib/libgobject-2.0.so.0
#23 0x00007ffff7537219 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#24 0x00007ffff7537462 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#25 0x00007ffff7af000a in playing_stream_cb (mmplayer=<optimized out>, 
    entry=0x7fffc43538a0, player=0x953800) at rb-shell-player.c:2528
#26 0x00007ffff751e458 in g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
#27 0x00007ffff752f40d in ?? () from /usr/lib/libgobject-2.0.so.0
#28 0x00007ffff7537219 in g_signal_emit_valist ()
   from /usr/lib/libgobject-2.0.so.0
#29 0x00007ffff7537462 in g_signal_emit () from /usr/lib/libgobject-2.0.so.0
#30 0x00007ffff7b63492 in _rb_player_emit_playing_stream (
    player=<optimized out>, stream_data=<optimized out>) at rb-player.c:697
#31 0x00007ffff7b6eb02 in emit_playing_stream_and_tags (
    player=player@entry=0x64e8d0, track_change=<optimized out>)
    at rb-player-gst.c:239
#32 0x00007ffff7b6f3a3 in track_change_done (mp=0x64e8d0, 
    error=<optimized out>) at rb-player-gst.c:344
#33 0x00007ffff7b7044a in bus_cb (bus=0x2326e70, message=0x250eb10, 
    mp=0x64e8d0) at rb-player-gst.c:538
#34 0x00007ffff0710171 in ?? () from /usr/lib/libgstreamer-1.0.so.0
#35 0x00007ffff7257f06 in g_main_context_dispatch ()
   from /usr/lib/libglib-2.0.so.0
#36 0x00007ffff7258258 in ?? () from /usr/lib/libglib-2.0.so.0
#37 0x00007ffff72582fc in g_main_context_iteration ()
   from /usr/lib/libglib-2.0.so.0
#38 0x00007ffff0efdb34 in g_application_run () from /usr/lib/libgio-2.0.so.0
#39 0x00007ffff7ad9e32 in rb_application_run (rb=0x61b000, argc=argc@entry=1, 
    argv=argv@entry=0x7fffffffe2d8) at rb-application.c:637
#40 0x0000000000400d62 in main (argc=1, argv=0x7fffffffe2d8) at main.c:95