[Bug 1726350] Re: unattended-upgrade crashed with apt.cache.LockFailedException in _fetch_archives(): Failed to lock /var/cache/apt/archives/lock

[Apport retracing service]

** Tags removed: need-duplicate-check

** Changed in: unattended-upgrades (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1726350

Title:
  unattended-upgrade crashed with apt.cache.LockFailedException in
  _fetch_archives(): Failed to lock /var/cache/apt/archives/lock

Status in unattended-upgrades package in Ubuntu:
  New

Bug description:
  I am unable to tell you how this happened, I just saw the application
  which reports bugs logo in the task bar.

  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: unattended-upgrades 0.98ubuntu1
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-16-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.7-0ubuntu3
  Architecture: amd64
  Date: Sat Oct 21 06:25:37 2017
  ExecutablePath: /usr/bin/unattended-upgrade
  InstallationDate: Installed on 2017-03-23 (213 days ago)
  InstallationMedia: budgie-remix 16.10 "Budgie-remix" -  amd64 (20161013)
  InterpreterPath: /usr/bin/python3.6
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/bin/unattended-upgrade
  Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2
  PythonArgs: ['/usr/bin/unattended-upgrade']
  PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal, 2.7.14-2ubuntu1
  SourcePackage: unattended-upgrades
  Title: unattended-upgrade crashed with apt.cache.LockFailedException in _fetch_archives(): Failed to lock /var/cache/apt/archives/lock
  UpgradeStatus: Upgraded to artful on 2017-10-20 (2 days ago)
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