Build failed in Jenkins: precise-alternate-amd64_default #1072

[Jenkins Notification]

See <http://d-jenkins.ubuntu-ci:8080/job/precise-alternate-amd64_default/1072/>

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Started due to content change in http://cdimage.ubuntu.com/precise/daily/current/SHA256SUMS
[EnvInject] - Loading node environment variables.
Building remotely on alderamin in workspace <http://d-jenkins.ubuntu-ci:8080/job/precise-alternate-amd64_default/ws/>
[precise-alternate-amd64_default] $ /bin/bash /tmp/hudson8208982016918484188.sh
ln: failed to create symbolic link `/var/lib/ubuntu-server-iso-testing/isos/ubuntu-alternate/ubuntu': File exists
INFO:root:Checking/Downloading current build for variant alternate from http://cdimage.ubuntu.com/precise/daily
ERROR:root:Failed to fetch URL 'http://cdimage.ubuntu.com/precise/daily/current/SHA256SUMS': HTTP Error 404: Not Found . Aborting!
Build step 'Execute shell' marked build as failure
Archiving artifacts
Recording test results
[description-setter] Could not determine description.