Trying to upgrade from 14.04 LTS to 16.04 LTS

[John Arens]

Ran
sudo do-release-upgrade

I hit Enter at the first prompt. Then, 99% [Waiting for headers]. Then, it says "Error during update" and it aborts.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.9
ProcVersionSignature: Ubuntu 4.2.0-42.49~14.04.1-generic 4.2.8-ckt12
Uname: Linux 4.2.0-42-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Sun Mar 4 11:47:14 2018
InstallationDate: Installed on 2016-09-19 (531 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2018-03-04 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2018-03-04 11:29:50.783444
 Log time: 2018-03-04 11:30:05.027134
 Log time: 2018-03-04 11:31:02.311927

[Brian Murray (brian-murray)]

Something went wrong when the release upgrader was trying to create a sources.list file for your upgrade. I suspect the problematic lines in your original sources.list file are the following:

 57 deb https://apt.dockerproject.org/repo/ ubuntu-trusty main
 58 # deb-src https://apt.dockerproject.org/repo/ ubuntu-trusty main
 59
 60 # Need for lilyterm
 61 deb http://debian.luna.com.tw/trusty ./
 62 deb-src http://debian.luna.com.tw/trusty ./
 63
 64 deb http://www.fbriere.net/debian stable misc

Please comment those out and try the upgrade again.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]