IMHO, "No increment is older than ...." is normal behavior and should not cause a warning, especially since nonzero status codes are considered abnormal termination by most shells (even the Python docs <https://docs.python.org/3/library/sys.html#sys.exit> mention this), and can cause backup scripts to terminate.

On 2023-02-16 10:25, ewl+rdiffbackup-at-lavar.de |rdiff-backup-users| wrote:
Change log and man page indeed:

CHG: return codes have changed and are now more detailed, see man-page for 
details

CHG: start to introduce more specific return codes (1 for error, 2 for warning, 
4 for single file error, etc), which can be combined (e.g. 3 for error and 
warning), this will take time to introduce everywhere


On 16 February 2023 13:06:27 GMT+01:00, tbsky<[email protected]>  wrote:
[email protected]  於 2023-02-16 15:04:
Did you check the documentation? Tl;Dr: it is documented!
I am sorry. I only "man rdiff-backup", but I didn't see anything about the 
changed behavior.
what document should I read?
thanks a lot for help.

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