Failed upgrade 12.04 to 14.04

[Troy Robertson]

Sorry I lost what came before this as it scrolled up past my ssh clients limit
Failed due to errors during upgrade of server edition using do-release-upgrade.
I would attach log/dist-upgrade if there was an attach option here.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Your original sources.list was saved in
/etc/apt/sources.list.distUpgrade.

SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)

Could not install the upgrades

The upgrade has aborted. Your system could be in an unusable state. A
recovery will run now (dpkg --configure -a).

Please report this bug in a browser at
http://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+filebug
and attach the files in /var/log/dist-upgrade/ to the bug report.
installArchives() failed

Setting up iproute2 (3.12.0-2) ...
Installing new version of config file /etc/iproute2/ematch_map ...
Setting up libcairo2:amd64 (1.13.0~20140204-0ubuntu1.1) ...
Setting up libgdbm3:amd64 (1.8.3-12build1) ...
Setting up libgraphite2-3:amd64 (1.2.4-1ubuntu1) ...
dpkg: dependency problems prevent configuration of libreadline-dev:amd64:
 libreadline-dev:amd64 depends on libreadline6-dev (= 6.3-4ubuntu2); however:
  Version of libreadline6-dev:amd64 on system is 6.2-8.

dpkg: error processing package libreadline-dev:amd64 (--configure):
 dependency problems - leaving unconfigured
Setting up ucf (3.0027+nmu1) ...