New command line interface not backward compatible ?

[Patrik Dufresne]

Hello,

I'm slowly migrating from v2.0 to v2.2 and I'm getting this error message

rdiff-backup -v 5 /tmp /test
[138] Failed to execute script 'rdiff-backup' due to unhandled exception!
WARNING: this command line interface is deprecated and will disappear,
start using the new one as described with '--new --help'.
Traceback (most recent call last):
  File "rdiff-backup", line 8, in <module>
  File "rdiffbackup/run.py", line 37, in main
  File "rdiffbackup/run.py", line 72, in main_run
KeyError: 'backup'

I know there is a new command line interface since v2.2, but I thought it
was backward compatible with v2.0. I'm probably missing something obvious.

Thanks for helping

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