According to the changelog, Upstart 1.13 introduces support for cgroups via a brand-new ???cgroup??? stanza, which makes use of cgmanager function and is available for both Session and System inits. However, you can disable support for cgroups when compiling the application. Moreover, chroot sessions are now disabled by default and a brand-new ???–chroot-sessions??? command-line option has been added for restoring the old default behaviour of the functionality.