#0  0x00007ff8f4a9cb84 in g_object_unref (_object=0x2ecfe40) at /build/buildd/glib2.0-2.37.7/./gobject/gobject.c:3089
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gobject.c was not found in source tree]
#1  0x00007ff8ee16d629 in gtk_cell_area_set_focus_cell (area=area@entry=0x3488ab0, renderer=renderer@entry=0x0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcellarea.c:2969
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcellarea.c was not found in source tree]
#2  0x00007ff8ee16d723 in gtk_cell_area_dispose (object=0x3488ab0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcellarea.c:953
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcellarea.c was not found in source tree]
#3  0x00007ff8f4a9cc8c in g_object_unref (_object=0x3488ab0) at /build/buildd/glib2.0-2.37.7/./gobject/gobject.c:3160
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gobject.c was not found in source tree]
#4  0x00007ff8ee204df5 in gtk_icon_view_dispose (object=0x2e02670) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkiconview.c:1049
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkiconview.c was not found in source tree]
#5  0x00007ff8f4a9ec40 in g_object_run_dispose (object=0x2e02670) at /build/buildd/glib2.0-2.37.7/./gobject/gobject.c:1067
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gobject.c was not found in source tree]
#6  0x00007ff8ee29296e in gtk_scrolled_window_forall (container=0x2d7d4c0, include_internals=0, callback=0x7ff8ee34b9a0 <gtk_widget_destroy>, callback_data=0x0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkscrolledwindow.c:1582
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkscrolledwindow.c was not found in source tree]
#7  0x00007ff8ee199e30 in gtk_container_destroy (widget=0x2d7d4c0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c:1377
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c was not found in source tree]
#8  0x00007ff8f4a98262 in g_closure_invoke (closure=0x2933b10, return_value=0x0, n_param_values=1, param_values=0x7fff598593b0, invocation_hint=0x7fff59859350) at /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c:777
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c was not found in source tree]
#9  0x00007ff8f4aaaaf4 in signal_emit_unlocked_R (node=node@entry=0x29deb00, detail=detail@entry=0, instance=instance@entry=0x2d7d4c0, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff598593b0) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3702
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#10 0x00007ff8f4ab294a in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff59859538) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3330
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#11 0x00007ff8f4ab2c22 in g_signal_emit (instance=instance@entry=0x2d7d4c0, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3386
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#12 0x00007ff8ee358c00 in gtk_widget_dispose (object=0x2d7d4c0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c:10771
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c was not found in source tree]
#13 0x00007ff8f4a9ec40 in g_object_run_dispose (object=0x2d7d4c0) at /build/buildd/glib2.0-2.37.7/./gobject/gobject.c:1067
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gobject.c was not found in source tree]
#14 0x00007ff8ee1555da in gtk_box_forall (container=<optimized out>, include_internals=<optimized out>, callback=0x7ff8ee34b9a0 <gtk_widget_destroy>, callback_data=0x0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkbox.c:1865
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkbox.c was not found in source tree]
#15 0x00007ff8ee199e30 in gtk_container_destroy (widget=0x2d81700) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c:1377
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c was not found in source tree]
#16 0x00007ff8f4a98262 in g_closure_invoke (closure=0x2933b10, return_value=0x0, n_param_values=1, param_values=0x7fff59859830, invocation_hint=0x7fff598597d0) at /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c:777
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c was not found in source tree]
#17 0x00007ff8f4aaaaf4 in signal_emit_unlocked_R (node=node@entry=0x29deb00, detail=detail@entry=0, instance=instance@entry=0x2d81700, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff59859830) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3702
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#18 0x00007ff8f4ab294a in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff598599b8) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3330
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#19 0x00007ff8f4ab2c22 in g_signal_emit (instance=instance@entry=0x2d81700, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3386
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#20 0x00007ff8ee358c00 in gtk_widget_dispose (object=0x2d81700) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c:10771
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c was not found in source tree]
#21 0x00007ff8f4a9ec40 in g_object_run_dispose (object=0x2d81700) at /build/buildd/glib2.0-2.37.7/./gobject/gobject.c:1067
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gobject.c was not found in source tree]
#22 0x00007ff8ee250246 in gtk_notebook_forall (container=<optimized out>, include_internals=0, callback=0x7ff8ee34b9a0 <gtk_widget_destroy>, callback_data=0x0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtknotebook.c:4498
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtknotebook.c was not found in source tree]
#23 0x00007ff8ee199e30 in gtk_container_destroy (widget=0x2d7d330) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c:1377
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c was not found in source tree]
#24 0x00007ff8f4a98262 in g_closure_invoke (closure=0x2933b10, return_value=0x0, n_param_values=1, param_values=0x7fff59859cc0, invocation_hint=0x7fff59859c60) at /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c:777
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c was not found in source tree]
#25 0x00007ff8f4aaaaf4 in signal_emit_unlocked_R (node=node@entry=0x29deb00, detail=detail@entry=0, instance=instance@entry=0x2d7d330, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff59859cc0) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3702
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#26 0x00007ff8f4ab294a in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff59859e48) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3330
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#27 0x00007ff8f4ab2c22 in g_signal_emit (instance=instance@entry=0x2d7d330, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3386
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#28 0x00007ff8ee358c00 in gtk_widget_dispose (object=0x2d7d330) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c:10771
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c was not found in source tree]
#29 0x00007ff8f4a9ec40 in g_object_run_dispose (object=0x2d7d330) at /build/buildd/glib2.0-2.37.7/./gobject/gobject.c:1067
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gobject.c was not found in source tree]
#30 0x00007ff8ee1555da in gtk_box_forall (container=<optimized out>, include_internals=<optimized out>, callback=0x7ff8ee34b9a0 <gtk_widget_destroy>, callback_data=0x0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkbox.c:1865
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkbox.c was not found in source tree]
#31 0x00007ff8ee199e30 in gtk_container_destroy (widget=0x2d81600) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c:1377
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c was not found in source tree]
#32 0x00007ff8f4a98262 in g_closure_invoke (closure=0x2933b10, return_value=0x0, n_param_values=1, param_values=0x7fff5985a140, invocation_hint=0x7fff5985a0e0) at /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c:777
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c was not found in source tree]
#33 0x00007ff8f4aaaaf4 in signal_emit_unlocked_R (node=node@entry=0x29deb00, detail=detail@entry=0, instance=instance@entry=0x2d81600, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff5985a140) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3702
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#34 0x00007ff8f4ab294a in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff5985a2c8) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3330
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#35 0x00007ff8f4ab2c22 in g_signal_emit (instance=instance@entry=0x2d81600, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3386
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#36 0x00007ff8ee358c00 in gtk_widget_dispose (object=0x2d81600) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c:10771
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c was not found in source tree]
#37 0x00007ff8f4a9ec40 in g_object_run_dispose (object=0x2d81600) at /build/buildd/glib2.0-2.37.7/./gobject/gobject.c:1067
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gobject.c was not found in source tree]
#38 0x00007ff8ee199e30 in gtk_container_destroy (widget=0x2dfd190) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c:1377
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkcontainer.c was not found in source tree]
#39 0x00007ff8f4a982e8 in g_closure_invoke (closure=0x2933b10, return_value=0x0, n_param_values=1, param_values=0x7fff5985a590, invocation_hint=0x7fff5985a530) at /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c:777
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gclosure.c was not found in source tree]
#40 0x00007ff8f4aaaaf4 in signal_emit_unlocked_R (node=node@entry=0x29deb00, detail=detail@entry=0, instance=instance@entry=0x2dfd190, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff5985a590) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3702
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#41 0x00007ff8f4ab294a in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff5985a718) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3330
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#42 0x00007ff8f4ab2c22 in g_signal_emit (instance=instance@entry=0x2dfd190, signal_id=<optimized out>, detail=detail@entry=0) at /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c:3386
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gsignal.c was not found in source tree]
#43 0x00007ff8ee358c00 in gtk_widget_dispose (object=0x2dfd190) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c:10771
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c was not found in source tree]
#44 0x00007ff8f4a9ec40 in g_object_run_dispose (object=0x2dfd190) at /build/buildd/glib2.0-2.37.7/./gobject/gobject.c:1067
  [Error: /build/buildd/glib2.0-2.37.7/./gobject/gobject.c was not found in source tree]
#45 0x00007ff8ee34ba01 in gtk_widget_destroy (widget=<optimized out>) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c:4093
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkwidget.c was not found in source tree]
#46 0x00007ff8ee22c059 in gtk_main_do_event (event=0x38f06a0) at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkmain.c:1606
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkmain.c was not found in source tree]
#47 0x00007ff8f2ed5fa2 in gdk_event_source_dispatch (source=source@entry=0x28afde0, callback=<optimized out>, user_data=<optimized out>) at /build/buildd/gtk+3.0-3.8.4/./gdk/x11/gdkeventsource.c:364
  [Error: /build/buildd/gtk+3.0-3.8.4/./gdk/x11/gdkeventsource.c was not found in source tree]
#48 0x00007ff8f47c83c6 in g_main_dispatch (context=0x28b25b0) at /build/buildd/glib2.0-2.37.7/./glib/gmain.c:3065
  [Error: /build/buildd/glib2.0-2.37.7/./glib/gmain.c was not found in source tree]
#49 g_main_context_dispatch (context=context@entry=0x28b25b0) at /build/buildd/glib2.0-2.37.7/./glib/gmain.c:3641
  [Error: /build/buildd/glib2.0-2.37.7/./glib/gmain.c was not found in source tree]
#50 0x00007ff8f47c8718 in g_main_context_iterate (context=0x28b25b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.37.7/./glib/gmain.c:3712
  [Error: /build/buildd/glib2.0-2.37.7/./glib/gmain.c was not found in source tree]
#51 0x00007ff8f47c8b1a in g_main_loop_run (loop=0x3696b00) at /build/buildd/glib2.0-2.37.7/./glib/gmain.c:3906
  [Error: /build/buildd/glib2.0-2.37.7/./glib/gmain.c was not found in source tree]
#52 0x00007ff8ee22b3a5 in gtk_main () at /build/buildd/gtk+3.0-3.8.4/./gtk/gtkmain.c:1156
  [Error: /build/buildd/gtk+3.0-3.8.4/./gtk/gtkmain.c was not found in source tree]
#53 0x00007ff8f3dfdadc in ffi_call_unix64 () at ../src/x86/unix64.S:76
  [Error: ../src/x86/unix64.S was not found in source tree]
#54 0x00007ff8f3dfd40c in ffi_call (cif=cif@entry=0x7fff5985ab90, fn=fn@entry=0x7ff8ee22b320 <gtk_main>, rvalue=rvalue@entry=0x7fff5985ab70, avalue=avalue@entry=0x7fff5985aad0) at ../src/x86/ffi64.c:522
  [Error: ../src/x86/ffi64.c was not found in source tree]
#55 0x00007ff8f4ce9d19 in g_callable_info_invoke (info=info@entry=0x3587990, function=0x7ff8ee22b320 <gtk_main>, in_args=in_args@entry=0x0, n_in_args=n_in_args@entry=0, out_args=out_args@entry=0x0, n_out_args=n_out_args@entry=0, return_value=return_value@entry=0x7fff5985ad68, is_method=is_method@entry=0, throws=0, error=error@entry=0x7fff5985ad18) at girepository/gicallableinfo.c:680
  [Error: girepository/gicallableinfo.c was not found in source tree]
#56 0x00007ff8f4ceb057 in g_function_info_invoke (info=info@entry=0x3587990, in_args=0x0, n_in_args=0, out_args=0x0, n_out_args=0, return_value=return_value@entry=0x7fff5985ad68, error=error@entry=0x7fff5985ad18) at girepository/gifunctioninfo.c:274
  [Error: girepository/gifunctioninfo.c was not found in source tree]
#57 0x00007ff8f4f2c027 in _invoke_callable (function_ptr=0x0, callable_info=0x3587990, cache=0x36ae000, state=0x7fff5985ad20) at ../../gi/pygi-invoke.c:64
  [Error: ../../gi/pygi-invoke.c was not found in source tree]
#58 pygi_callable_info_invoke (info=<optimized out>, py_args=<optimized out>, kwargs=<optimized out>, cache=<optimized out>, function_ptr=<optimized out>, user_data=<optimized out>) at ../../gi/pygi-invoke.c:652
  [Error: ../../gi/pygi-invoke.c was not found in source tree]
#59 0x00000000004fe720 in PyObject_Call (kw=0x0, arg=0x7ff8f73e8050, func=0x2f590d8) at ../Objects/abstract.c:2529
  [Error: ../Objects/abstract.c was not found in source tree]
#60 do_call (nk=<optimized out>, na=<optimized out>, pp_stack=0x7fff5985aec0, func=0x2f590d8) at ../Python/ceval.c:4239
  [Error: ../Python/ceval.c was not found in source tree]
#61 call_function (oparg=<optimized out>, pp_stack=0x7fff5985aec0) at ../Python/ceval.c:4044
  [Error: ../Python/ceval.c was not found in source tree]
#62 PyEval_EvalFrameEx (f=f@entry=0x34af5c0, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
  [Error: ../Python/ceval.c was not found in source tree]
#63 0x00000000004fea32 in fast_function (nk=<optimized out>, na=<optimized out>, n=1, pp_stack=0x7fff5985b000, func=0x2bcf938) at ../Python/ceval.c:4107
  [Error: ../Python/ceval.c was not found in source tree]
#64 call_function (oparg=<optimized out>, pp_stack=0x7fff5985b000) at ../Python/ceval.c:4042
  [Error: ../Python/ceval.c was not found in source tree]
#65 PyEval_EvalFrameEx (f=f@entry=0x25a2880, throwflag=throwflag@entry=0) at ../Python/ceval.c:2666
  [Error: ../Python/ceval.c was not found in source tree]
#66 0x000000000056c414 in PyEval_EvalCodeEx (co=0x26e9bb0, globals=<optimized out>, locals=<optimized out>, args=<optimized out>, argcount=<optimized out>, kws=<optimized out>, kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3253
  [Error: ../Python/ceval.c was not found in source tree]
#67 0x00000000005ba3b2 in PyEval_EvalCode (co=<optimized out>, globals=<optimized out>, locals=<optimized out>) at ../Python/ceval.c:667
  [Error: ../Python/ceval.c was not found in source tree]
#68 0x00000000005abe1b in run_mod.42564 (mod=<optimized out>, filename=<optimized out>, globals=0x22ca690, locals=0x22ca690, flags=<optimized out>, arena=<optimized out>) at ../Python/pythonrun.c:1365
  [Error: ../Python/pythonrun.c was not found in source tree]
#69 0x000000000045270b in PyRun_FileExFlags (fp=fp@entry=0x23db720, filename=filename@entry=0x7fff5985c877 "/usr/share/system-config-printer/system-config-printer.py", start=start@entry=257, globals=globals@entry=0x22ca690, locals=locals@entry=0x22ca690, closeit=closeit@entry=1, flags=flags@entry=0x7fff5985b240) at ../Python/pythonrun.c:1351
  [Error: ../Python/pythonrun.c was not found in source tree]
#70 0x0000000000452f05 in PyRun_SimpleFileExFlags (fp=fp@entry=0x23db720, filename=<optimized out>, filename@entry=0x7fff5985c877 "/usr/share/system-config-printer/system-config-printer.py", closeit=closeit@entry=1, flags=flags@entry=0x7fff5985b240) at ../Python/pythonrun.c:943
  [Error: ../Python/pythonrun.c was not found in source tree]
#71 0x0000000000453001 in PyRun_AnyFileExFlags (fp=fp@entry=0x23db720, filename=filename@entry=0x7fff5985c877 "/usr/share/system-config-printer/system-config-printer.py", closeit=closeit@entry=1, flags=flags@entry=0x7fff5985b240) at ../Python/pythonrun.c:747
  [Error: ../Python/pythonrun.c was not found in source tree]
#72 0x0000000000453b6a in Py_Main (argc=<optimized out>, argv=0x7fff5985b3f8) at ../Modules/main.c:640
  [Error: ../Modules/main.c was not found in source tree]
#73 0x00007ff8f6309de5 in __libc_start_main (main=0x453c28 <main>, argc=2, ubp_av=0x7fff5985b3f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff5985b3e8) at libc-start.c:260
  [Error: libc-start.c was not found in source tree]
#74 0x000000000057a701 in _start ()