[Bug 1849669] Re: do-release-upgrade (19.04 -> 19.10) aborts

[Chippo Elder]

I don't know why you wanted the output of 'apt-cache policy distro-
info', but seeing as it was missing, I installed it.

That didn't change anything about the results of the attempted upgrade.
It did run the upgrade, now, in screen, which is damn cool. It should
have done that before I installed distro-info.

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https://bugs.launchpad.net/bugs/1849669

Title:
  do-release-upgrade (19.04 -> 19.10) aborts

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

Bug description:
  Running sudo do-release-upgrade I get:
  =========================
  Checking for a new Ubuntu release
  Get:1 Upgrade tool signature [1,554 B]                                                                      
  Get:2 Upgrade tool [1,319 kB]                                                                               
  Fetched 1,320 kB in 6s (21.3 kB/s)                                                                          
  authenticate 'eoan.tar.gz' against 'eoan.tar.gz.gpg' 
  extracting 'eoan.tar.gz'

  Reading cache

  Checking package manager
  Reading package lists... Done
  Building dependency tree        
  Reading state information... Done
  Hit http://archive.ubuntu.com/ubuntu disco InRelease                                                        
  Hit http://archive.canonical.com/ubuntu disco InRelease                                                     
  Get:1 http://archive.ubuntu.com/ubuntu disco-updates InRelease [97.5 kB]                                    
  Get:2 http://archive.ubuntu.com/ubuntu disco-security InRelease [97.5 kB]                                   
  Get:3 http://archive.ubuntu.com/ubuntu disco-backports InRelease [88.8 kB]                                  
  Fetched 284 kB in 0s (0 B/s)                                                                                
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done

  Restoring original system state

  Aborting
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done
  =========================

  I've had the problem for several days, but the system otherwise seems
  completely cool. I keep getting and successfully installing all the
  usual security updates (firefox this morning).

  The only logs which seem relevant are in /var/log/dist-upgrade/main.log
  =========================
  2019-10-24 14:15:14,716 INFO Using config files '['./DistUpgrade.cfg']'
  2019-10-24 14:15:14,716 INFO uname information: 'Linux chippo-Aspire-V3-731 5.0.0-32-generic #34-Ubuntu SMP Wed Oct 2 02:06:48 UTC 2019 x86_64'
  2019-10-24 14:15:15,262 INFO apt version: '1.8.3'
  2019-10-24 14:15:15,262 INFO python version: '3.7.3 (default, Oct  7 2019, 12:56:13) 
  [GCC 8.3.0]'
  2019-10-24 14:15:15,267 INFO release-upgrader version '19.10.12' started
  2019-10-24 14:15:15,279 INFO locale: 'en_ZA' 'UTF-8'
  2019-10-24 14:15:15,344 INFO screen could not be run
  2019-10-24 14:15:15,388 DEBUG Using 'DistUpgradeViewText' view
  2019-10-24 14:15:15,451 DEBUG enable dpkg --force-overwrite
  2019-10-24 14:15:15,495 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
  2019-10-24 14:15:25,436 DEBUG lsb-release: 'disco'
  2019-10-24 14:15:25,436 DEBUG _pythonSymlinkCheck run
  2019-10-24 14:15:25,438 DEBUG openCache()
  2019-10-24 14:15:25,438 DEBUG quirks: running PreCacheOpen
  2019-10-24 14:15:25,438 DEBUG running Quirks.PreCacheOpen
  2019-10-24 14:15:26,288 DEBUG /openCache(), new cache size 95789
  2019-10-24 14:15:26,288 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
  2019-10-24 14:15:26,288 DEBUG checkViewDepends()
  2019-10-24 14:15:26,290 DEBUG running doUpdate() (showErrors=False)
  2019-10-24 14:15:29,239 DEBUG openCache()
  2019-10-24 14:15:30,217 DEBUG /openCache(), new cache size 95789
  2019-10-24 14:15:30,217 DEBUG doPostInitialUpdate
  2019-10-24 14:15:30,217 DEBUG quirks: running eoanPostInitialUpdate
  2019-10-24 14:15:30,217 DEBUG running Quirks.eoanPostInitialUpdate
  2019-10-24 14:15:35,238 DEBUG abort called
  2019-10-24 14:15:35,238 DEBUG openCache()
  2019-10-24 14:15:36,226 DEBUG /openCache(), new cache size 95789
  =========================

  lsb_release -rd
  Description:	Ubuntu 19.04
  Release:	19.04

  apt-cache policy ubuntu-release-upgrader-core
  ubuntu-release-upgrader-core:
    Installed: 1:19.04.16.7
    Candidate: 1:19.04.16.7
    Version table:
   *** 1:19.04.16.7 500
          500 http://archive.ubuntu.com/ubuntu disco-updates/main amd64 Packages
          500 http://archive.ubuntu.com/ubuntu disco-updates/main i386 Packages
          100 /var/lib/dpkg/status
       1:19.04.16 500
          500 http://archive.ubuntu.com/ubuntu disco/main amd64 Packages
          500 http://archive.ubuntu.com/ubuntu disco/main i386 Packages

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