#0  magazine_chain_pop_head (magazine_chunks=0x1d90b70) at /build/buildd/glib2.0-2.30.0/./glib/gslice.c:488
        chunk = <optimized out>
#1  thread_memory_magazine1_alloc (ix=<optimized out>, tmem=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gslice.c:795
        mag = 0x1d90b70
#2  g_slice_alloc (mem_size=104) at /build/buildd/glib2.0-2.30.0/./glib/gslice.c:833
        tmem = 0x1d90b00
        ix = <optimized out>
        chunk_size = <optimized out>
        mem = <optimized out>
#3  0x00007f56232b76e6 in g_slice_alloc0 (mem_size=104) at /build/buildd/glib2.0-2.30.0/./glib/gslice.c:854
        mem = <optimized out>
#4  0x00007f561ff006eb in ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.5
No symbol table info available.
#5  0x00007f561ff1d097 in ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.5
No symbol table info available.
#6  0x00007f561ff1dc48 in ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.5
No symbol table info available.
#7  0x00007f5625160d28 in st_theme_node_transition_paint () from /usr/lib/gnome-shell/libgnome-shell.so
No symbol table info available.
#8  0x00007f5625165230 in ?? () from /usr/lib/gnome-shell/libgnome-shell.so
No symbol table info available.
#9  0x00007f562513a60a in ?? () from /usr/lib/gnome-shell/libgnome-shell.so
No symbol table info available.
#10 0x00007f562355bffa in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x45ec4e0, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = 1
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#11 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x522c720, emission_return=0x0, instance_and_params=0x45ec4e0) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x7fffcf95ed30, instance = 0x522c720, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 53981808}
        class_closure = 0x26919c0
        hlist = 0x2a32af8
        handler_list = 0x0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 0
#12 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x45ec4e0
        signal_return_type = 4
        param_values = 0x45ec4f8
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#13 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf95e9a0, reg_save_area = 0x7fffcf95e8e0}}
#14 0x00007f562435f262 in clutter_actor_continue_paint (self=0x522c720) at ./clutter-actor.c:3045
        priv = 0x522c760
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#15 0x00007f562436b9fc in clutter_actor_paint (self=0x522c720) at ./clutter-actor.c:2987
        priv = 0x522c760
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 0
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#16 0x00007f562355bffa in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x46d8660, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = 1
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#17 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x48d77b0, emission_return=0x0, instance_and_params=0x46d8660) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x7fffcf95f3d0, instance = 0x48d77b0, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 32207456}
        class_closure = 0x26919c0
        hlist = 0x5182e58
        handler_list = 0x0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 0
#18 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x46d8660
        signal_return_type = 4
        param_values = 0x46d8678
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#19 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf95f020, reg_save_area = 0x7fffcf95ef60}}
#20 0x00007f562435f262 in clutter_actor_continue_paint (self=0x48d77b0) at ./clutter-actor.c:3045
        priv = 0x48d77f0
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#21 0x00007f562436b9fc in clutter_actor_paint (self=0x48d77b0) at ./clutter-actor.c:2987
        priv = 0x48d77f0
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 0
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#22 0x00007f56251288f8 in ?? () from /usr/lib/gnome-shell/libgnome-shell.so
No symbol table info available.
#23 0x00007f562355bffa in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x466f860, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = 1
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#24 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x2b1ac00, emission_return=0x0, instance_and_params=0x466f860) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x7fffcf95fac0, instance = 0x2b1ac00, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 53980016}
        class_closure = 0x26919c0
        hlist = 0x2bfad88
        handler_list = 0x0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 0
#25 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x466f860
        signal_return_type = 4
        param_values = 0x466f878
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#26 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf95f6c0, reg_save_area = 0x7fffcf95f600}}
#27 0x00007f562435f262 in clutter_actor_continue_paint (self=0x2b1ac00) at ./clutter-actor.c:3045
        priv = 0x2b1ac40
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#28 0x00007f562436b9fc in clutter_actor_paint (self=0x2b1ac00) at ./clutter-actor.c:2987
        priv = 0x2b1ac40
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 0
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#29 0x00007f562513c711 in ?? () from /usr/lib/gnome-shell/libgnome-shell.so
No symbol table info available.
#30 0x00007f562355bffa in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x374b300, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = 1
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#31 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x3802790, emission_return=0x0, instance_and_params=0x374b300) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x7fffcf960140, instance = 0x3802790, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 41033312}
        class_closure = 0x26919c0
        hlist = 0x3803408
        handler_list = 0x0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 0
#32 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x374b300
        signal_return_type = 4
        param_values = 0x374b318
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#33 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf95fdb0, reg_save_area = 0x7fffcf95fcf0}}
#34 0x00007f562435f262 in clutter_actor_continue_paint (self=0x3802790) at ./clutter-actor.c:3045
        priv = 0x38027d0
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#35 0x00007f562436b9fc in clutter_actor_paint (self=0x3802790) at ./clutter-actor.c:2987
        priv = 0x38027d0
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 1
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#36 0x00007f562355bffa in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x450e6a0, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = 1
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#37 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x3802c40, emission_return=0x0, instance_and_params=0x450e6a0) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x7fffcf9607e0, instance = 0x3802c40, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 53981808}
        class_closure = 0x26919c0
        hlist = 0x3804958
        handler_list = 0x0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 0
#38 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x450e6a0
        signal_return_type = 4
        param_values = 0x450e6b8
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#39 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf960430, reg_save_area = 0x7fffcf960370}}
#40 0x00007f562435f262 in clutter_actor_continue_paint (self=0x3802c40) at ./clutter-actor.c:3045
        priv = 0x3802c80
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#41 0x00007f562436b9fc in clutter_actor_paint (self=0x3802c40) at ./clutter-actor.c:2987
        priv = 0x3802c80
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 0
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#42 0x00007f5623296b97 in g_list_foreach (list=<optimized out>, func=0x7f562436b6e0 <clutter_actor_paint>, user_data=0x0) at /build/buildd/glib2.0-2.30.0/./glib/glist.c:938
        next = 0x45ec600
#43 0x00007f562355bffa in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x4841ec0, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = 1
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#44 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x31b95d0, emission_return=0x0, instance_and_params=0x4841ec0) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x7fffcf960ea0, instance = 0x31b95d0, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 54660592}
        class_closure = 0x26919c0
        hlist = 0x2c20c58
        handler_list = 0x0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 0
#45 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x4841ec0
        signal_return_type = 4
        param_values = 0x4841ed8
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#46 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf960ad0, reg_save_area = 0x7fffcf960a10}}
#47 0x00007f562435f262 in clutter_actor_continue_paint (self=0x31b95d0) at ./clutter-actor.c:3045
        priv = 0x31b9610
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#48 0x00007f562436b9fc in clutter_actor_paint (self=0x31b95d0) at ./clutter-actor.c:2987
        priv = 0x31b9610
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 0
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#49 0x00007f5623296b97 in g_list_foreach (list=<optimized out>, func=0x7f562436b6e0 <clutter_actor_paint>, user_data=0x0) at /build/buildd/glib2.0-2.30.0/./glib/glist.c:938
        next = 0x2f80440
#50 0x00007f56243989c2 in clutter_group_real_paint (actor=0x30401c0) at ./clutter-group.c:281
        priv = 0x3040550
#51 0x00007f562355bffa in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x45d8400, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = 1
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#52 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x30401c0, emission_return=0x0, instance_and_params=0x45d8400) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x7fffcf961540, instance = 0x30401c0, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 40329072}
        class_closure = 0x26919c0
        hlist = 0x1
        handler_list = 0x0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 0
#53 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x45d8400
        signal_return_type = 4
        param_values = 0x45d8418
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#54 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf961190, reg_save_area = 0x7fffcf9610d0}}
#55 0x00007f562435f262 in clutter_actor_continue_paint (self=0x30401c0) at ./clutter-actor.c:3045
        priv = 0x30401f0
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#56 0x00007f562436b9fc in clutter_actor_paint (self=0x30401c0) at ./clutter-actor.c:2987
        priv = 0x30401f0
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 0
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#57 0x00007f56251288f8 in ?? () from /usr/lib/gnome-shell/libgnome-shell.so
No symbol table info available.
#58 0x00007f562355bffa in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x45d8420, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = 1
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#59 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x337d920, emission_return=0x0, instance_and_params=0x45d8420) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x7fffcf961c30, instance = 0x337d920, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 53980016}
        class_closure = 0x26919c0
        hlist = 0x32d14d8
        handler_list = 0x0
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 0
#60 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x45d8420
        signal_return_type = 4
        param_values = 0x45d8438
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#61 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf961830, reg_save_area = 0x7fffcf961770}}
#62 0x00007f562435f262 in clutter_actor_continue_paint (self=0x337d920) at ./clutter-actor.c:3045
        priv = 0x337d960
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#63 0x00007f562436b9fc in clutter_actor_paint (self=0x337d920) at ./clutter-actor.c:2987
        priv = 0x337d960
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 0
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#64 0x00007f5623296b97 in g_list_foreach (list=<optimized out>, func=0x7f562436b6e0 <clutter_actor_paint>, user_data=0x0) at /build/buildd/glib2.0-2.30.0/./glib/glist.c:938
        next = 0x3381600
#65 0x00007f56243989c2 in clutter_group_real_paint (actor=0x2696410) at ./clutter-group.c:281
        priv = 0x26967b0
#66 0x00007f56243b91b1 in clutter_stage_paint (self=0x2696410) at ./clutter-stage.c:634
        priv = 0x26967c0
        clear_flags = <optimized out>
        stage_color = {red = 34 '"', green = 102 'f', blue = 187 '\273', alpha = 255 '\377', padding0 = 0, padding1 = 592827458, padding2 = 32598}
#67 0x00007f562355c0a4 in g_closure_invoke (closure=0x26919c0, return_value=0x0, n_param_values=1, param_values=0x44d6220, invocation_hint=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gclosure.c:774
        marshal = 0x7f562355a940 <g_type_class_meta_marshal>
        marshal_data = <optimized out>
        in_marshal = <optimized out>
        __PRETTY_FUNCTION__ = "g_closure_invoke"
#68 0x00007f562356de5f in signal_emit_unlocked_R (node=<optimized out>, detail=0, instance=0x2696410, emission_return=0x0, instance_and_params=0x44d6220) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3310
        accumulator = 0x0
        emission = {next = 0x0, instance = 0x2696410, ihint = {signal_id = 204, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = 40330464}
        class_closure = 0x26919c0
        hlist = 0x27e9830
        handler_list = 0x27e9830
        return_accu = 0x0
        accu = {g_type = 0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
        signal_id = 204
        max_sequential_handler_number = 21954
        return_value_altered = 1
#69 0x00007f56235776b1 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3003
        instance_and_params = 0x44d6220
        signal_return_type = 4
        param_values = 0x44d6238
        node = 0x2691ae0
        i = <optimized out>
        n_params = 0
        __PRETTY_FUNCTION__ = "g_signal_emit_valist"
#70 0x00007f5623577852 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at /build/buildd/glib2.0-2.30.0/./gobject/gsignal.c:3060
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area = 0x7fffcf961f20, reg_save_area = 0x7fffcf961e60}}
#71 0x00007f562435f262 in clutter_actor_continue_paint (self=0x2696410) at ./clutter-actor.c:3045
        priv = 0x2696450
        __PRETTY_FUNCTION__ = "clutter_actor_continue_paint"
#72 0x00007f562436b9fc in clutter_actor_paint (self=0x2696410) at ./clutter-actor.c:2987
        priv = 0x2696450
        pick_mode = CLUTTER_PICK_NONE
        clip_set = 0
        shader_applied = 0
        __PRETTY_FUNCTION__ = "clutter_actor_paint"
#73 0x00007f56243bd2f1 in _clutter_stage_do_paint (stage=0x2696410, clip=0x0) at ./clutter-stage.c:574
        priv = <optimized out>
        clip_poly = {0, 0, 1920, 0, 1920, 1080, 0, 1080}
        geom = {x = 54659328, y = 0, width = 1920, height = 1080}
#74 0x00007f562435a212 in clutter_stage_cogl_redraw (stage_window=0x265d200) at ./cogl/clutter-stage-cogl.c:453
        stage_cogl = 0x265d200
        wrapper = 0x2696410
        backend = <optimized out>
        backend_cogl = <optimized out>
        may_use_clipped_redraw = <optimized out>
        use_clipped_redraw = 0
        stage_x11 = 0x265d200
#75 0x00007f56243bbf2a in clutter_stage_do_redraw (stage=0x2696410) at ./clutter-stage.c:1023
        backend = 0x1da1060
        actor = 0x2696410
        priv = 0x26967c0
#76 _clutter_stage_do_update (stage=0x2696410) at ./clutter-stage.c:1079
        priv = 0x26967c0
#77 0x00007f56243a36c0 in clutter_clock_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at ./clutter-master-clock.c:384
        clock_source = <optimized out>
        master_clock = 0x1ecfd00
        stage_manager = <optimized out>
        stages_updated = <optimized out>
        stages = 0x51b2050
        l = 0x51b2050
#78 0x00007f562329ba5d in g_main_dispatch (context=0x1da7280) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:2441
        dispatch = 0x7f56243a35e0 <clutter_clock_dispatch>
        was_in_call = 0
        user_data = 0x0
        callback = 0
        cb_funcs = 0x0
        cb_data = 0x0
        current_source_link = {data = 0x2698d40, next = 0x0}
        need_destroy = <optimized out>
        source = 0x2698d40
        current = 0x32c3240
        i = <optimized out>
#79 g_main_context_dispatch (context=0x1da7280) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3011
No locales.
#80 0x00007f562329c258 in g_main_context_iterate (context=0x1da7280, block=<optimized out>, dispatch=1, self=<optimized out>) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3089
        max_priority = 150
        timeout = 0
        some_ready = 1
        nfds = 14
        allocated_nfds = <optimized out>
        fds = <optimized out>
#81 0x00007f562329c792 in g_main_loop_run (loop=0x1da9e00) at /build/buildd/glib2.0-2.30.0/./glib/gmain.c:3297
        __PRETTY_FUNCTION__ = "g_main_loop_run"
#82 0x00007f5624e84d81 in meta_run () from /usr/lib/libmutter.so.0
No symbol table info available.
#83 0x0000000000402641 in main ()
No symbol table info available.