do-release-upgrade -d Ubuntu 13.10 – > 14.04失败

Ubuntu 13.10 64服务器,从13.04升级一次后 – > 13.10然后尝试13.10 – > 14.04.我有一个瞬态网络故障下载14.04的包列表一次停止了该过程,尝试重新启动该过程导致以下结果

root@server:~# do-release-upgrade -d

Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1,148 kB]
Fetched 1,148 kB in 0s (0 B/s)
authenticate 'trusty.tar.gz' against 'trusty.tar.gz.gpg'
gpg exited 2
Debug information:

gpg: fatal: can't open fd 6 for status output: Bad file descriptor
secmem usage: 0/0 bytes in 0/0 blocks of pool 0/0


Authentication Failed
Authenticating the upgrade Failed. There may be a problem with the network or with the server.

如何重新启动do-release-upgrade过程？

Apt-get已经完全更新,升级,升级.

更新：

root@server:~# lsb_release -a
No LSB modules are available.
distributor ID: Ubuntu
Description:    Ubuntu 13.10
Release:        13.10
Codename:       saucy

这个答案几乎是偏离主题的,但这是我一直在想的东西.

每次我升级Debian或它的一些派生词,比如Ubuntu或Mint,我就是这么做的

sed -i -e 's/olddistroname/newdistroname/g' /etc/apt/sources.list
apt-get update && apt-get dist-upgrade
reboot

然后我喜欢我刚刚发布的新发行版.

这一直对我有用.所有这些释放升级的喧嚣使我成为一个非常困惑,愤怒,老胡子.

所以我的子问题是：如果它们甚至不起作用,那些do-release-upgrade样式命令的好处是什么？经过验证的工作方式出了什么问题？ (apt-get与aptitude是另一场我正试图消化的战斗)