Cron <root at neill-backup> /usr/local/bin/rsnapshot -c /usr/local/etc/rsnapshot_neill-zfs_home.conf daily

[root]

sudo: no tty present and no askpass program specified
rsync: connection unexpectedly closed (0 bytes received so far) [Receiver]
rsync error: error in rsync protocol data stream (code 12) at io.c(226) [Receiver=3.1.1]
----------------------------------------------------------------------------
rsnapshot encountered an error! The program was invoked with these options:
/usr/local/bin/rsnapshot -c /usr/local/etc/rsnapshot_neill-zfs_home.conf \
    daily 
----------------------------------------------------------------------------
ERROR: /usr/local/bin/rsync returned 12 while processing backup at neill-zfs.int.autonlab.org:/mnt/zfsneill/home/