release upgrade 14.04 fails

[Gabriel Mazetto]

trying to upgrade 13.10 to 14.04 and it fails trying to change sources

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-release-upgrader-core 1:0.205.4
ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6
Uname: Linux 3.11.0-13-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CheckboxSubmission: f042666db45a149fd59ebbf79fdfbc2d
CheckboxSystem: 1ff432ae68dbf3d4a96bfd7a9ba17ef7
CrashDB: ubuntu
Date: Thu Jan 30 00:49:56 2014
InstallationDate: Installed on 2013-01-21 (374 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to saucy on 2014-01-30 (0 days ago)
VarLogDistupgradeTermlog: