Build failed in Jenkins: precise-alternate-amd64_lvm #823

[Jenkins Notification]

See <http://d-jenkins.ubuntu-ci:8080/job/precise-alternate-amd64_lvm/823/>

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Started by upstream project "precise-alternate-amd64_default" build number 1062
[EnvInject] - Loading node environment variables.
Building remotely on wazn in workspace <http://d-jenkins.ubuntu-ci:8080/job/precise-alternate-amd64_lvm/ws/>
[precise-alternate-amd64_lvm] $ /bin/bash /tmp/hudson7222628736415374314.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
INFO:root:Downloading ISO...
reading seed file ubuntu/precise-alternate-amd64.iso: **************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************
Read ubuntu/precise-alternate-amd64.iso. Target 100.0% complete.      
verifying download...checksum matches OK
used 782237696 local, fetched 0
Syncing precise ubuntu alternate amd64
Verifying ubuntu/precise-alternate-amd64.iso
!!! Verification failed !!!
INFO:root:Local file doesn't match checksum. Aborting!
Build step 'Execute shell' marked build as failure
Archiving artifacts
Recording test results
[description-setter] Could not determine description.