[Bug 1572416] Re: do-release-upgrade crashes in Greek locale

[Steve Langasek]

The backtrace shows:
 UnicodeDecodeError: 'utf-8' codec can't decode byte 0xcf in position 0: invalid continuation byte

You state in your bug report that your locale is set to el_GR.UTF-8; so
'utf-8' codec should be correct and your input should be in utf-8
encoding.

Confusingly, I can't see why your input would *include* the listed 0xcf
byte.  The UTF-8 encoding of λ is 0xce 0xb4.

If this problem is reproducible, please do:

  echo -n <text_to_paste_into_prompt> | od -tx1

Attach the result of this command to this bug.

Then, instead of typing the answer into the do-release-upgrade terminal,
please cut and paste the text there and verify that the backtrace is
still reproducible.

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https://bugs.launchpad.net/bugs/1572416

Title:
  do-release-upgrade crashes in Greek locale

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

Bug description:
  I tried `do-release-upgrade -d` on an up to date 14.04 system, with
  Greek locale=el_GR.UTF-8.

  I got notified that some packages are no longer supported by Canonical, and then I got this prompt:
  Continue [yN] λεπτομέρειες [λ]

  λεπτομέρειες means details.

  I tried pressing [λ] and I got the (hopefully attached) crash. If it's
  not attached, I also uploaded it to http://paste.ubuntu.com/15941779/.

  Then it restarted the upgrade process and it got to the same prompt. At that point, [λ] worked and showed me the no-longer supported packages,
  but y/n didn't work at all, so I couldn't continue.

  I pressed Ctrl+C to abort the upgrade process,
  but now `do-release-upgrade -d` tells me there's no new distribution available to upgrade to, possibly because it's checking my just-broken sources.list...

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.13.0-85.129-generic 3.13.11-ckt36
  Uname: Linux 3.13.0-85-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  Date: Wed Apr 20 08:52:43 2016
  InstallationDate: Installed on 2015-01-29 (446 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64+mac (20140722.2)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=el
   TERM=xterm
   PATH=(custom, no user)
   LANG=el_GR.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-04-20 (0 days ago)

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