Do not use f-strings and preformatted messages in logs.

[Carreau]

Prompted by comment in #1478 (comment)

in general you never want to pass anything but a literal string as a first argument go the various log.info|warn|error methods; see https://docs.astral.sh/ruff/rules/#flake8-logging-format-g

That is to say, no f-strings; not even pre-formatted variables, as it prevents formatters to do a lot of what they are supposed to do.

There is at least 2 dozen usage of this pattern in the codebase:

$ grep -r  'log.info(f' .   | wc -l
      26

[krassowski]

Is this a duplicate of #1186?

[Carreau]

It is indeed.