Build failed in Jenkins: precise-alternate-amd64_default #602

[Jenkins Notification]

See <http://10.189.74.2:8080/job/precise-alternate-amd64_default/602/>

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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 wazn
[precise-alternate-amd64_default] $ /bin/bash /tmp/hudson3117424244288617029.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:Remote file not available. Retrying in 15 minutes
INFO:root:Downloading ISO...
INFO:root:Local file doesn't match checksum. Aborting!
Build step 'Execute shell' marked build as failure
Archiving artifacts
Recording test results