After T94917 fixed, it now fails on:
Apr 2 22:22:51 integration-slave-precise-1011 puppet-agent[14854]: Could not retrieve catalog from remote server: Error 400 on SERVER: Duplicate declaration: Package[git-core] is already declared in file /etc/puppet/modules/authdns/manifests/scripts.pp:15; cannot redeclare at /etc/puppet/modules/base/manifests/standard-packages.pp:37 on node i-00000a44.eqiad.wmflabs