[Bug 1785909] [NEW] update-manager crashes when upgrading from 16.04

Tue Aug 7 22:23:27 UTC 2018

Public bug reported:

I have a 16.04 system where the package snapd has been uninstalled. On
trying to upgrade this system to 18.04, I get the following error

$ sudo update-manager -d
/usr/bin/update-manager:28: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk
/usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Dbusmenu was imported without specifying a version first. Use gi.require_version('Dbusmenu', '0.4') before import to ensure that the right version gets loaded.
  from gi.repository import Dbusmenu, Unity
/usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Unity was imported without specifying a version first. Use gi.require_version('Unity', '7.0') before import to ensure that the right version gets loaded.
  from gi.repository import Dbusmenu, Unity
Checking for a new Ubuntu release
/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcher.py:23: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
  from gi.repository import Gtk, Gdk
/usr/lib/python3/dist-packages/DistUpgrade/ReleaseNotesViewerWebkit.py:33: PyGIWarning: WebKit2 was imported without specifying a version first. Use gi.require_version('WebKit2', '4.0') before import to ensure that the right version gets loaded.
  from gi.repository import WebKit2 as WebKit
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg' 
extracting 'bionic.tar.gz'
Traceback (most recent call last):
  File "/tmp/ubuntu-release-upgrader-18ogog0r/bionic", line 8, in <module>
    sys.exit(main())
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeMain.py", line 238, in main
    if app.run():
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1949, in run
    return self.fullUpgrade()
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1826, in fullUpgrade
    if not self.doPostInitialUpdate():
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 893, in doPostInitialUpdate
    self.quirks.run("PostInitialUpdate")
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 113, in run
    func()
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 133, in bionicPostInitialUpdate
    self._checkStoreConnectivity()
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 492, in _checkStoreConnectivity
    stderr=PIPE, universal_newlines=True).communicate()
  File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'snap'
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/problem_report.py", line 497, in add_to_existing
    self.write(f)
  File "/usr/lib/python3/dist-packages/problem_report.py", line 450, in write
    block = f.read(1048576)
  File "/usr/lib/python3.5/codecs.py", line 321, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte

Original exception was:
Traceback (most recent call last):
  File "/tmp/ubuntu-release-upgrader-18ogog0r/bionic", line 8, in <module>
    sys.exit(main())
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeMain.py", line 238, in main
    if app.run():
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1949, in run
    return self.fullUpgrade()
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1826, in fullUpgrade
    if not self.doPostInitialUpdate():
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 893, in doPostInitialUpdate
    self.quirks.run("PostInitialUpdate")
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 113, in run
    func()
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 133, in bionicPostInitialUpdate
    self._checkStoreConnectivity()
  File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 492, in _checkStoreConnectivity
    stderr=PIPE, universal_newlines=True).communicate()
  File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'snap'

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: dist-upgrade

** Tags added: dist-upgrade

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https://bugs.launchpad.net/bugs/1785909

Title:
  update-manager crashes when upgrading from 16.04

Status in update-manager package in Ubuntu:
  New

Bug description:
  I have a 16.04 system where the package snapd has been uninstalled. On
  trying to upgrade this system to 18.04, I get the following error

  $ sudo update-manager -d
  /usr/bin/update-manager:28: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
    from gi.repository import Gtk
  /usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Dbusmenu was imported without specifying a version first. Use gi.require_version('Dbusmenu', '0.4') before import to ensure that the right version gets loaded.
    from gi.repository import Dbusmenu, Unity
  /usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Unity was imported without specifying a version first. Use gi.require_version('Unity', '7.0') before import to ensure that the right version gets loaded.
    from gi.repository import Dbusmenu, Unity
  Checking for a new Ubuntu release
  /usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeFetcher.py:23: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
    from gi.repository import Gtk, Gdk
  /usr/lib/python3/dist-packages/DistUpgrade/ReleaseNotesViewerWebkit.py:33: PyGIWarning: WebKit2 was imported without specifying a version first. Use gi.require_version('WebKit2', '4.0') before import to ensure that the right version gets loaded.
    from gi.repository import WebKit2 as WebKit
  Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
  authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg' 
  extracting 'bionic.tar.gz'
  Traceback (most recent call last):
    File "/tmp/ubuntu-release-upgrader-18ogog0r/bionic", line 8, in <module>
      sys.exit(main())
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeMain.py", line 238, in main
      if app.run():
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1949, in run
      return self.fullUpgrade()
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1826, in fullUpgrade
      if not self.doPostInitialUpdate():
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 893, in doPostInitialUpdate
      self.quirks.run("PostInitialUpdate")
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 113, in run
      func()
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 133, in bionicPostInitialUpdate
      self._checkStoreConnectivity()
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 492, in _checkStoreConnectivity
      stderr=PIPE, universal_newlines=True).communicate()
    File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
      restore_signals, start_new_session)
    File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
      raise child_exception_type(errno_num, err_msg)
  FileNotFoundError: [Errno 2] No such file or directory: 'snap'
  Error in sys.excepthook:
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/problem_report.py", line 497, in add_to_existing
      self.write(f)
    File "/usr/lib/python3/dist-packages/problem_report.py", line 450, in write
      block = f.read(1048576)
    File "/usr/lib/python3.5/codecs.py", line 321, in decode
      (result, consumed) = self._buffer_decode(data, self.errors, final)
  UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte

  Original exception was:
  Traceback (most recent call last):
    File "/tmp/ubuntu-release-upgrader-18ogog0r/bionic", line 8, in <module>
      sys.exit(main())
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeMain.py", line 238, in main
      if app.run():
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1949, in run
      return self.fullUpgrade()
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 1826, in fullUpgrade
      if not self.doPostInitialUpdate():
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeController.py", line 893, in doPostInitialUpdate
      self.quirks.run("PostInitialUpdate")
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 113, in run
      func()
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 133, in bionicPostInitialUpdate
      self._checkStoreConnectivity()
    File "/tmp/ubuntu-release-upgrader-18ogog0r/DistUpgrade/DistUpgradeQuirks.py", line 492, in _checkStoreConnectivity
      stderr=PIPE, universal_newlines=True).communicate()
    File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
      restore_signals, start_new_session)
    File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
      raise child_exception_type(errno_num, err_msg)
  FileNotFoundError: [Errno 2] No such file or directory: 'snap'

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