This appears to be a crash inside Qt itself, and only occurs with 5.6+,
apparently due to QDBus changing to use threading instead of the event
loop, for asynchronous operations. There seems to be some fixes in Qt
Code Review that should theoretically fix this. It would be nice if we
could test these and get them into our release of Qt. I'm afraid there
won't be any way to work around this crash in the scope or ubuntu-
download-manager (we're keeping a u-d-m singleton object around, which
is destroyed on exit) code itself.

** Package changed: unity-scope-click (Ubuntu) => qtbase-opensource-src
(Ubuntu)

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https://bugs.launchpad.net/bugs/1618590

Title:
  scoperunner crashed with SIGSEGV in QObject::disconnect()

Status in qtbase-opensource-src package in Ubuntu:
  Confirmed

Bug description:
  crash

  ProblemType: Crash
  DistroRelease: Ubuntu 16.10
  Package: unity-scope-click 0.1.1+16.10.20160808-0ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-9136.55-generic 4.4.16
  Uname: Linux 4.4.0-9136-generic x86_64
  ApportVersion: 2.20.3-0ubuntu7
  Architecture: amd64
  Date: Tue Aug 30 17:54:20 2016
  ExecutablePath: /usr/lib/x86_64-linux-gnu/unity-scopes/scoperunner
  InstallationDate: Installed on 2016-08-27 (3 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  ProcCmdline: /usr/lib/x86_64-linux-gnu/unity-scopes/scoperunner  
/usr/lib/x86_64-linux-gnu/unity-scopes/clickapps/clickscope.ini
  Scope: Apps
  Signal: 11
  SourcePackage: unity-scope-click
  StacktraceTop:
   QObject::disconnect(QObject const*, char const*, QObject const*, char 
const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
   ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
   ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
   ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
   start_thread (arg=0x7fae9eade700) at pthread_create.c:333
  Title: scoperunner crashed with SIGSEGV in QObject::disconnect()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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