[Borgbackup] ability to hide message about old borg server?

[Felix Schwarz]

Hi,

I still use a borg 1.0 server with 1.1 clients. This seems to work pretty well
so far but I get this message:

Remote: Borg 1.0.9: exception in RPC call:out
Remote: Traceback (most recent call last):
Remote:   File "/usr/lib/python3/dist-packages/borg/remote.py", line 108, in serve
Remote:     raise InvalidRPCMethod(method)
Remote: borg.remote.InvalidRPCMethod: get_free_nonce
Remote: Platform: ...
Remote: Linux: ...
...
Remote: sys.argv: ['/usr/bin/borg', 'serve', '--umask=077', '--info']
Remote: SSH_ORIGINAL_COMMAND: None
Remote:
Please upgrade to borg version 1.1+ on the server for safer AES-CTR nonce
handling.

Is there a way to suppress this message? Upgrading the server is on my list
but it will take a bit until I can do it so it would be nice to have less
output from backups (= no cron mails :-).

Felix