[Bug 1285545] Re: P->T server upgrade failure: ubuntu-release-upgrader fails with OSError: [Errno 2] No such file or directory

[Launchpad Bug Tracker]

** Branch linked: lp:~jibel/ubuntu/trusty/ubuntu-release-
upgrader/dont_fail_if_no_apport

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https://bugs.launchpad.net/bugs/1285545

Title:
  P->T server upgrade failure: ubuntu-release-upgrader fails with
  OSError: [Errno 2] No such file or directory

Status in “ubuntu-release-upgrader” package in Ubuntu:
  New

Bug description:
  P -> T upgrade [1]

  If apport-bug is not installed on the system and an error occurs
  during upgrade, ubuntu-release-upgrader fails with:

  Fetched 1,144 kB in 0s (0 B/s)
  authenticate 'trusty.tar.gz' against 'trusty.tar.gz.gpg'
  extracting 'trusty.tar.gz'
  Traceback (most recent call last):
    File "/tmp/update-manager-HZc0r1/trusty", line 10, in <module>
      sys.exit(main())
    File "/tmp/update-manager-HZc0r1/DistUpgrade/DistUpgradeMain.py", line 243, in main
      if app.run():
    File "/tmp/update-manager-HZc0r1/DistUpgrade/DistUpgradeController.py", line 1791, in run
      return self.fullUpgrade()
    File "/tmp/update-manager-HZc0r1/DistUpgrade/DistUpgradeController.py", line 1738, in fullUpgrade
      subprocess.Popen(["apport-bug", "ubuntu-release-upgrader-core"])
    File "/usr/lib/python2.7/subprocess.py", line 679, in __init__
      errread, errwrite)
    File "/usr/lib/python2.7/subprocess.py", line 1249, in _execute_child
      raise child_exception
  OSError: [Errno 2] No such file or directory

  It should fail more gracefully and revert to the original state.

  [1] https://jenkins.qa.ubuntu.com/job/upgrade-ubuntu-precise-trusty-
  server-tasks-amd64/44/

  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.210
  ProcVersionSignature: Ubuntu 3.13.0-12.32-generic 3.13.4
  Uname: Linux 3.13.0-12-generic x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Feb 27 09:05:37 2014
  InstallationDate: Installed on 2013-09-03 (176 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: No upgrade log present (probably fresh install)

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