[Bug 1616855] Re: 16.04 Upgrade fails with error W:Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/xenial/universe/source/Sources 404

[Ubuntu Foundations Team Bug Bot]

** Tags added: trusty2xenial

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https://bugs.launchpad.net/bugs/1616855

Title:
  16.04 Upgrade fails with error W:Failed to fetch
  http://in.archive.ubuntu.com/ubuntu/dists/xenial/universe/source/Sources
  404

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

Bug description:
  Upgrade to 16.04 from 14.04 fails with the following error:

  W:Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/xenial/universe/source/Sources  404  Not Found [IP: 91.189.88.152 80]
  , W:Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/xenial/universe/binary-amd64/Packages  404  Not Found [IP: 91.189.88.152 80]
  , W:Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/xenial/universe/binary-i386/Packages  404  Not Found [IP: 91.189.88.152 80]
  , E:Some index files failed to download. They have been ignored, or old ones used instead.'.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.19.0-61.69~14.04.1-generic 3.19.8-ckt21
  Uname: Linux 3.19.0-61-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Thu Aug 25 15:57:53 2016
  InstallationDate: Installed on 2015-09-03 (357 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  ProcEnviron:
   LANGUAGE=en_IN:en
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_IN
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  Symptom: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-08-24 (1 days ago)
  VarLogDistupgradeAptlog:
   Log time: 2016-08-24 11:40:16.704266
   Log time: 2016-08-24 11:43:15.188964
   Log time: 2016-08-24 12:18:59.469510
  VarLogDistupgradeTermlog:

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