After updating all components, I've got a bunch of warnings about crowsnest. I don't use it, but it was installed with mainsailOS and has never complained.
Warnings are:
[update_manager]: Failed to load extension crowsnest: Invalid path for option install_script in section [update_manager crowsnest]: Path /home/pi/crowsnest/tools/pkglist.sh does not exist (confirmed, that specific file doesn't exist)
Unparsed config option 'origin: https://github.com/mainsail-crew/crowsnest.git' detected in section [update_manager crowsnest]. This may be an option no longer available or could be the result of a module that failed to load. In the future this will result in a startup error.
Unparsed config option 'managed_services: crowsnest' detected in section [update_manager crowsnest]. This may be an option no longer available or could be the result of a module that failed to load. In the future this will result in a startup error.
None of the other update_manager options are giving the same sort of errors.