I recently changed our Jenkins CI infrastructure to use something like this: all jobs run in their own LXC container, using BTRFS and its snapshots/clones instead of AUFS. Works like a charm!

The script is available at https://github.com/Incubaid/jenkins-lxc (no docs for now, and several improvements are possible). It expects CI job scripts to be contained in the job repository, e.g. https://github.com/Incubaid/arakoon/tree/1.6/jenkins