simon@nirvana ~/Work/ubuntu/snappy/core-snap (master) $ make
mkdir -p auto
for f in config build clean; \
    do ln -s /usr/share/livecd-rootfs/live-build/auto/$f auto/; \
done
PROJECT=ubuntu-core SUBPROJECT=system-image EXTRA_PPAS='snappy-dev/image snappy-dev/edge' IMAGEFORMAT=plain SUITE=xenial ARCH=amd64 lb clean
[2017-01-20 10:38:30] lb_clean 
P: Executing auto/clean script.
[2017-01-20 10:38:30] lb_clean noauto
P: Cleaning chroot
PROJECT=ubuntu-core SUBPROJECT=system-image EXTRA_PPAS='snappy-dev/image snappy-dev/edge' IMAGEFORMAT=plain SUITE=xenial ARCH=amd64 lb config
[2017-01-20 10:38:30] lb_config 
P: Executing auto/config script.
Building on nirvana
[2017-01-20 10:38:30] lb_config noauto --mode ubuntu --distribution xenial --bootstrap-keyring ubuntu-keyring --binary-images none --memtest none --source false --build-with-chroot false --parent-archive-areas main restricted universe multiverse --apt-source-archives false --linux-flavours none --initsystem none --bootloader none --initramfs-compression lzma --initramfs none --chroot-filesystem plain --apt-recommends false --linux-packages=none --initramfs=none --initramfs-compression=none --bootstrap-flavour=minimal
P: Considering defaults defined in /etc/live/build.conf
P: Updating config tree for a ubuntu/amd64 system
gpg: keyring `/tmp/tmp.KS4YguNiSL/secring.gpg' created
gpg: keyring `/tmp/tmp.KS4YguNiSL/pubring.gpg' created
gpg: requesting key FC42E99D from hkp server keyserver.ubuntu.com
gpg: /tmp/tmp.KS4YguNiSL/trustdb.gpg: trustdb created
gpg: key FC42E99D: public key "Launchpad PPA for Snappy Developers" imported
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)
gpg: requesting key FC42E99D from hkp server keyserver.ubuntu.com
gpg: key FC42E99D: "Launchpad PPA for Snappy Developers" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1
PROJECT=ubuntu-core SUBPROJECT=system-image EXTRA_PPAS='snappy-dev/image snappy-dev/edge' IMAGEFORMAT=plain SUITE=xenial ARCH=amd64 lb build
[2017-01-20 10:38:31] lb_build 
P: Executing auto/build script.
P: Setting up cleanup function
[2017-01-20 10:38:31] lb_bootstrap 
P: Setting up cleanup function
[2017-01-20 10:38:31] lb_bootstrap_cache restore
P: Restoring bootstrap stage from cache...
[2017-01-20 10:38:31] lb_bootstrap_copy 
[2017-01-20 10:38:31] lb_bootstrap_cdebootstrap 
[2017-01-20 10:38:31] lb_bootstrap_debootstrap 
P: Begin bootstrapping system...
[2017-01-20 10:38:31] lb_testroot 
E: need root privileges
P: Begin unmounting filesystems...
P: Saving caches...
chroot: cannot change root directory to 'chroot': No such file or directory
P: Begin unmounting filesystems...
P: Saving caches...
chroot: cannot change