[Bug 1453740] Re: do-release-upgrade crashes with message : "UnicodeDecodeError: 'utf-8' codec can't decode byte 0xae in position 337: invalid start byte"

[David Peall]

Please report this as a bug and include the files 
/var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log in 
your report. The upgrade has aborted. 
Your original sources.list was saved in 
/etc/apt/sources.list.distUpgrade. 

Traceback (most recent call last):

File "/tmp/ubuntu-release-upgrader-zbnoluzb/utopic", line 8, in 
<module> 
sys.exit(main()) 

File 
"/tmp/ubuntu-release-upgrader-zbnoluzb/DistUpgrade/DistUpgradeMain.py", 
line 239, in main 
if app.run(): 

File 
"/tmp/ubuntu-release-upgrader-zbnoluzb/DistUpgrade/DistUpgradeController.py", 
line 1822, in run 
return self.fullUpgrade() 

File 
"/tmp/ubuntu-release-upgrader-zbnoluzb/DistUpgrade/DistUpgradeController.py", 
line 1707, in fullUpgrade 
if not self.doPostInitialUpdate(): 

File 
"/tmp/ubuntu-release-upgrader-zbnoluzb/DistUpgrade/DistUpgradeController.py", 
line 893, in doPostInitialUpdate 
self.tasks = self.cache.installedTasks 

File 
"/tmp/ubuntu-release-upgrader-zbnoluzb/DistUpgrade/DistUpgradeCache.py", 
line 778, in installedTasks 
for line in pkg._pcache._records.record.split("\n"): 

UnicodeDecodeError: 'utf-8' codec can't decode byte 0xa9 in position 
403: invalid start byte 
=== Command terminated with exit status 1 (Fri May 29 09:35:36 2015) ===

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https://bugs.launchpad.net/bugs/1453740

Title:
  do-release-upgrade crashes with message : "UnicodeDecodeError: 'utf-8'
  codec can't decode byte 0xae in position 337: invalid start byte"

Status in update-manager-core package in Ubuntu:
  Confirmed

Bug description:
  for dist upgrade from Ubuntu 14.04 LTS to the next "normal" release, when I make a do-release-upgrade -d, I get this error :
  UnicodeDecodeError: 'utf-8' codec can't decode byte 0xae in position
  337: invalid start byte
  I have cleaned all the files in /etc/apt/sources.list.d/
  but no change in order to remove all unencoded characters like accent etc...

  # lsb_release -rd
  Description:    Ubuntu 14.04.2 LTS
  Release:        14.04

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