#0  0x00007f905eeeaf77 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]
#1  0x00007f905eeee5e8 in __GI_abort () at abort.c:90
  [Error: abort.c was not found in source tree]
#2  0x00007f905f4e6fcd in _g_log_abort () at /build/buildd/glib2.0-2.38.0/./glib/gmessages.c:255
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmessages.c was not found in source tree]
#3  0x00007f905f5043a7 in g_assertion_message (domain=domain@entry=0x7f905f7d1f4e "GLib-GObject", file=file@entry=0x7f905f7d4b68 "/build/buildd/glib2.0-2.38.0/./gobject/gobject.c", line=line@entry=4300, func=func@entry=0x7f905f7d5448 <__FUNCTION__.13679> "g_weak_ref_set", message=message@entry=0x7f90642139f0 "assertion failed: (weak_locations != NULL)") at /build/buildd/glib2.0-2.38.0/./glib/gtestutils.c:2278
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gtestutils.c was not found in source tree]
#4  0x00007f905f50440a in g_assertion_message_expr (domain=domain@entry=0x7f905f7d1f4e "GLib-GObject", file=file@entry=0x7f905f7d4b68 "/build/buildd/glib2.0-2.38.0/./gobject/gobject.c", line=line@entry=4300, func=func@entry=0x7f905f7d5448 <__FUNCTION__.13679> "g_weak_ref_set", expr=expr@entry=0x7f905f7d46d9 "weak_locations != NULL") at /build/buildd/glib2.0-2.38.0/./glib/gtestutils.c:2293
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gtestutils.c was not found in source tree]
#5  0x00007f905f7b3b46 in g_weak_ref_set (weak_ref=0x7f9044035d00, object=0x0) at /build/buildd/glib2.0-2.38.0/./gobject/gobject.c:4300
  [Error: /build/buildd/glib2.0-2.38.0/./gobject/gobject.c was not found in source tree]
#6  0x00007f906155047b in signal_closure_free (signal_closure=0x7f9044035d00) at e-cal-client.c:182
  [Error: e-cal-client.c was not found in source tree]
#7  0x00007f905f4dd498 in g_source_callback_unref (cb_data=0x7f9030012f30) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:1549
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmain.c was not found in source tree]
#8  0x00007f905f4dd9e7 in g_source_destroy_internal (source=source@entry=0x7f903000ac90, context=context@entry=0x7f9063fdd060, have_lock=have_lock@entry=1) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:1208
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmain.c was not found in source tree]
#9  0x00007f905f4e03f0 in g_main_dispatch (context=0x7f9063fdd060) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3089
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmain.c was not found in source tree]
#10 g_main_context_dispatch (context=context@entry=0x7f9063fdd060) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3641
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmain.c was not found in source tree]
#11 0x00007f905f4e06f8 in g_main_context_iterate (context=context@entry=0x7f9063fdd060, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3712
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmain.c was not found in source tree]
#12 0x00007f905f4e079c in g_main_context_iteration (context=0x7f9063fdd060, context@entry=0x0, may_block=may_block@entry=1) at /build/buildd/glib2.0-2.38.0/./glib/gmain.c:3773
  [Error: /build/buildd/glib2.0-2.38.0/./glib/gmain.c was not found in source tree]
#13 0x00007f905fa83a2c in g_application_run (application=0x7f906413d0f0, argc=1, argv=0x7fff770ffc68) at /build/buildd/glib2.0-2.38.0/./gio/gapplication.c:1635
  [Error: /build/buildd/glib2.0-2.38.0/./gio/gapplication.c was not found in source tree]
#14 0x00007f9062088a62 in main ()