Create a new channel as a copy of main.
Rename main to:
Delete main? This cannot be undone.
# RUN: yaml-bench -canonical %s - 2001-12-15T02:59:43.1Z - 2001-12-14t21:59:43.10-05:00 - 2001-12-14 21:59:43.10 -5 - 2001-12-15 2:59:43.10 - 2002-12-14