[Bug 1825938] Re: Cannot update to 19.04 ubuntu-minimal could not be located

[Brian Murray]

I went ahead and switched my mirror of the Ubuntu archive to
mirrors.digitalocean.com and set RELEASE_UPGRADER_ALLOW_THIRD_PARTY=1,
which just prevents the unknown mirror question from appearing, and ran
into the following issue:

2019-04-23 11:34:19,521 WARNING mirror check skipped, *overriden* via config
2019-04-23 11:34:19,521 DEBUG examining: 'deb http://mirrors.digitalocean.com/ubuntu cosmic main restricted universe multiverse'
2019-04-23 11:34:19,522 DEBUG verifySourcesListEntry: deb http://mirrors.digitalocean.com/ubuntu disco main restricted universe multiverse
2019-04-23 11:34:19,522 DEBUG url_downloadable: http://mirrors.digitalocean.com/ubuntu/dists/disco/Release
2019-04-23 11:34:19,522 DEBUG s='http' n='mirrors.digitalocean.com' p='/ubuntu/dists/disco/Release' q='' f=''
2019-04-23 11:34:19,567 DEBUG error from httplib: 'HTTP Error 403: Forbidden'
2019-04-23 11:34:19,567 DEBUG entry '# deb http://mirrors.digitalocean.com/ubuntu cosmic main restricted universe multiverse' was disabled (no Release file)

The disco release file is accessible by other means and given that the
release upgrader is just using urlopen to retrieve the Release file I
suggest you take this up with digitalocean.

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https://bugs.launchpad.net/bugs/1825938

Title:
  Cannot update to 19.04 ubuntu-minimal could not be located

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

Bug description:
  This happens on two different machines running VPS on DigitalOcan,
  both trying to update, one from 18.04, the other from 18.10

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: ubuntu-release-upgrader-core 1:18.10.11.6
  ProcVersionSignature: Ubuntu 4.18.0-17.18-generic 4.18.20
  Uname: Linux 4.18.0-17-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13.2
  Architecture: amd64
  CrashDB: ubuntu
  Date: Tue Apr 23 07:22:43 2019
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to cosmic on 2019-04-23 (0 days ago)
  VarLogDistupgradeAptlog:
   Log time: 2019-04-23 07:06:30.943188
   Log time: 2019-04-23 07:11:57.621194

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