[Bug 94892] Symbolic threaded stack trace

[Apport retracing service]

** Attachment added: "ThreadStacktrace.txt (retraced)"
   http://librarian.launchpad.net/6899685/%3Cfdopen%3E

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[apport] evolution-2.10 crashed with SIGSEGV in update_completions_on_idle_cb()
https://launchpad.net/bugs/94892