upgrade to trusty fails because of failure to fetch from extras.ubuntu.com

[Shahar Or]

I go 'do-release-upgrade -d' and then at the end it tells me:
"
Error during update

A problem occurred during the update. This is usually some sort of
network problem, please check your network connection and retry.

W:Failed to fetch
http://extras.ubuntu.com/ubuntu/dists/trusty/main/binary-amd64/Packages
404 Not Found
, W:Failed to fetch
http://extras.ubuntu.com/ubuntu/dists/trusty/main/binary-i386/Packages
404 Not Found
, E:Some index files failed to download. They have been ignored, or
old ones used instead.

Restoring original system state

Aborting
"

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-release-upgrader-core 1:0.205.1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
CrashDB: ubuntu
Date: Thu Oct 24 07:36:02 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2010-10-12 (1107 days ago)
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to saucy on 2013-10-24 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2013-10-24 07:31:38.508410
 Log time: 2013-10-24 07:31:45.264557
 Log time: 2013-10-24 07:33:41.408628

=============
WORKAROUND

Before trying to upgrade to trusty disable the extras repository "Independent - Provided by third-party software developers"
=============

[Brian Murray (brian-murray)]

Some discussion on #ubuntu-devel about this:

14:48 < slangasek> stgraber, bdmurray: if extras.u.c
                   should go away for 14.04 anyway, then
                   that means we should really quirk it
                   in u-r-u
14:49 < stgraber> slangasek: it'd have to be discussed
                  with the CC and TB, but since nothing
                  was published in the past two cycles,
                  it'd seem reasonable to consider this a
                  failure and move on
14:50 < stgraber> in which case we'll indeed need some
                  code to get it out of any system that
                  used to have it enabled

[Boris Kheyfets (kheyfboris)]

Yep, there's no trusty at
http://extras.ubuntu.com/ubuntu/dists
yet.

[Haldrin Feitosa Figueiredo (haldrin)]

The Extras reproository is not active for Trusty yet.

[exploder91 (d-cosner)]

I upgraded Saucy to Trusty last night via the terminal. No real problems, some repos were disabled until the upgrade was complete and the upgrade was sucessful. This was done on a x64 Saucy install.

[Brian Murray (brian-murray)]

trusty ended up being added to extras.ubuntu.com, so there is no need to fix this in ubuntu-release-upgrader for trusty.