#0  0xb7713424 in __kernel_vsyscall ()
#1  0xb6b48b1f in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
  [Error: ../nptl/sysdeps/unix/sysv/linux/raise.c was not found in source tree]
#2  0xb6b4c0b3 in __GI_abort () at abort.c:90
  [Error: abort.c was not found in source tree]
#3  0xb6d9747a in g_assertion_message (domain=domain@entry=0xb75461b7 <gtk_text_view_accessible_set_run_attributes+1047> "$\004\350\342~\320\377\205\300u?\307D$\b\n", file=file@entry=0xb76175d8 <__PRETTY_FUNCTION__.39383+24> "_sort_column_id", line=line@entry=14130, func=func@entry=0xb761a64c "_URI", message=0x94d8c28 "assertion failed: (user_data == widget)") at /build/buildd/glib2.0-2.36.0/./glib/gtestutils.c:1912
  [Error: /build/buildd/glib2.0-2.36.0/./glib/gtestutils.c was not found in source tree]
#4  0xb6d97aaf in g_assertion_message_expr (domain=0xb75461b7 <gtk_text_view_accessible_set_run_attributes+1047> "$\004\350\342~\320\377\205\300u?\307D$\b\n", file=0xb76175d8 <__PRETTY_FUNCTION__.39383+24> "_sort_column_id", line=14130, func=0xb761a64c "_URI", expr=0xb7617436 "") at /build/buildd/glib2.0-2.36.0/./glib/gtestutils.c:1923
  [Error: /build/buildd/glib2.0-2.36.0/./glib/gtestutils.c was not found in source tree]
#5  0xb74d6aed in gtk_ui_manager_class_init (klass=0x94f1b98) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkuimanager.c:512
  [Error: /build/buildd/gtk+3.0-3.6.4/./gtk/gtkuimanager.c was not found in source tree]
#6  gtk_ui_manager_class_intern_init (klass=0xb6cd87cf <__GI___pthread_getspecific+15>) at /build/buildd/gtk+3.0-3.6.4/./gtk/gtkuimanager.c:453
  [Error: /build/buildd/gtk+3.0-3.6.4/./gtk/gtkuimanager.c was not found in source tree]
#7  0xb6e2b000 in ?? () from /tmp/apport_sandbox_blZUad/lib/i386-linux-gnu/libglib-2.0.so.0