ubuntu-release-upgrader is not aware about EOL versions

[Kristian]

recieved message "impossible to install required package"
Trying to upgrade from 14.04 to 14.10

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.7
ProcVersionSignature: Ubuntu 3.13.0-63.103-generic 3.13.11-ckt25
Uname: Linux 3.13.0-63-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.13
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sun Sep 6 20:27:36 2015
InstallationDate: Installed on 2013-07-12 (786 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2015-09-07 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update.manager.release.upgrades: 2015-09-05T10:02:36.220647

[dino99 (9d9)]

14.10has reached end of life on Jul 2015; so you need to choose 15.04 for upgrading.

https://wiki.ubuntu.com/Releases

[Brian Murray (brian-murray)]

@dino99 - The only way to skip a release when upgrading is to go from one LTS to another LTS, which in this case would be from 14.04 to 16.04., so it is not possible to upgrade from 14.04 to 15.04 as you suggest. Additionally, the upgrade did try to proceed and encountered an error which is unrelated to Utopic being End of Life.