Using Gitian on the LXC machine is broken (after upgrade to 14.04)

Trying to start a Tor Browser build on the LXC machine results in something like

    --- Building utils-linux for lucid amd64 ---
    Stopping target if it is up
    Making a new image copy
    sudo: unable to resolve host XX-XX-XXX-XXX
    Starting target
    Checking if target is upsudo: unable to resolve host XX-XX-XXX-XXX
    sudo: unable to resolve host XX-XX-XXX-XXX
    Preparing build environment
    sudo: unable to resolve host XX-XX-XXX-XXX
    passwd: password expiry information changed.
    sudo: unable to resolve host XX-XX-XXX-XXX
    bash: cannot set terminal process group (-1): Inappropriate ioctl for device
    bash: no job control in this shell
    To run a command as administrator (user "root"), use "sudo <command>".
    See "man sudo_root" for details. 

• hanging lxc processes doing lxc-start -n gitian -f var/lxc.config -- sudo -u ubuntu -i -- setarch x86_64 bash