[Bug 1272387] Re: needs porting to Python 3.4

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/trusty-proposed/ubuntu-release-upgrader

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https://bugs.launchpad.net/bugs/1272387

Title:
  needs porting to Python 3.4

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

Bug description:
  With python3.4 as default python3, ubuntu-release-upgrader fails:

    http://people.canonical.com/~pitti/tmp/autopkgtest-py34/fail/py34
  -ubuntu-release-upgrader/results/

  =====================================================================
  FAIL: testfetcher (test_dist_upgrade_fetcher_core.TestDistUpgradeFetcherCoreTestCase)
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "/tmp/adt-run.N1L4KF/dsc0-build/ubuntu-release-upgrader-0.209/tests/test_dist_upgrade_fetcher_core.py", line 92, in testfetcher
      self.assertTrue(res)
  nose.proxy.AssertionError: AssertionError: None is not true
  -------------------- >> begin captured stdout << ---------------------
  authenticate 'quantal.tar.gz' against 'quantal.tar.gz.gpg' 
  gpg exited 2
  Debug information: 

  gpg: fatal: can't open fd 30 for status output: Bad file descriptor
  secmem usage: 0/0 bytes in 0/0 blocks of pool 0/0

  
  Authentication failed
  Authenticating the upgrade failed. There may be a problem with the network or with the server. 
  =================================

  Unfortunately the test does not give away more information, like a
  Python backtrace of the upgrader itself. So this needs some manual
  investigation. I ran the test twice, once in the DC (where we run the
  production autopkgtests) and once on my machine with unrestricted
  network, with exactly the same failure.

  Note that there are a few CRITICALs/WARNINGs before:

  (process:9463): Gtk-WARNING **: Locale not supported by C library.
  	Using the fallback 'C' locale.

  ** (nosetests3:9463): WARNING **: Error retrieving accessibility bus
  address: org.freedesktop.DBus.Error.ServiceUnknown: The name
  org.a11y.Bus was not provided by any .service files

  (nosetests3:9463): Gtk-CRITICAL **: gtk_main_quit: assertion 'main_loops != NULL' failed
  /tmp/adt-run.N1L4KF/dsc0-build/ubuntu-release-upgrader-0.209/check_new_release_gtk.py:98: PyGIDeprecationWarning: Using positional arguments with the GObject constructor has been deprecated. Please specify keywords for schema or use a class specific constructor. See: https://wiki.gnome.org/PyGObject/InitializerDeprecations

  But these already happen with python3.3, and with that the test
  succeeds:

  http://d-jenkins.ubuntu-ci:8080/job/trusty-adt-ubuntu-release-
  upgrader/57/

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