upgrade release 14.10 or 15.10 it will not work

[windel]

在筹划升级时，一个不可解决问题发生了：

这可能是由以下原因造成的：
*升级为 Ubuntu 的预发行版本
*运行目前的 Ubuntu 预发布版本
*不是由 Ubuntu 提供的非官方软件包

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.13.0-75.119-generic 3.13.11-ckt32
Uname: Linux 3.13.0-75-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
Date: Sun Jan 17 16:39:28 2016
InstallationDate: Installed on 2015-10-22 (87 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=zh_CN:zh
 TERM=xterm
 PATH=(custom, no user)
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-01-17 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2016-01-16T18:46:24.202627

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1534374, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.