Sorry for the long subject.
I see some of my scores return this message:
Omitting the destination on a call to format is deprecated.
Pass #f as the destination, before the format string.
I have no idea of what could trigger it and I was not able to make a
minimal example.
I can share privately a score to anybody interested in debugging this
message.
I found a discussion about this message between Harm and David K six
years ago:
https://lists.gnu.org/archive/html/lilypond-user/2016-11/msg00966.html
I'm running LilyPond 2.23.80 (Guile 2), official binaries.