Looks like this is related to the improvements Ori and Tim made after the last issues.
When deploying a new version, wmf-config/ExtensionMessages-1.XXwmfY.php isn't created so it can be used
reedy@tin:/a/common$ scap test2wiki to 1.22wmf10 and rebuild l10n cache
Checking syntax... done
Copying to tin from tin.eqiad.wmnet...ok
Done
Updating ExtensionMessages-1.22wmf9.php...
done
Updating LocalisationCache for 1.22wmf9... done
Updating ExtensionMessages-1.22wmf8.php...
done
Updating LocalisationCache for 1.22wmf8... done
Updating ExtensionMessages-1.22wmf10.php...PHP Warning: require(/a/common/php-1.22wmf10/../wmf-config/ExtensionMessages-1.22wmf10.php): failed to open stream: No such file or directory in /usr/local/apache/common-local/wmf-config/CommonSettings.php on line 2632
Warning: require(/a/common/php-1.22wmf10/../wmf-config/ExtensionMessages-1.22wmf10.php): failed to open stream: No such file or directory in /usr/local/apache/common-local/wmf-config/CommonSettings.php on line 2632
PHP Fatal error: require(): Failed opening required '/a/common/php-1.22wmf10/../wmf-config/ExtensionMessages-1.22wmf10.php' (include_path='/a/common/php-1.22wmf10/extensions/TimedMediaHandler/handlers/OggHandler/PEAR/File_Ogg:/a/common/php-1.22wmf10:/usr/local/lib/php:/usr/share/php') in /usr/local/apache/common-local/wmf-config/CommonSettings.php on line 2632
Fatal error: require(): Failed opening required '/a/common/php-1.22wmf10/../wmf-config/ExtensionMessages-1.22wmf10.php' (include_path='/a/common/php-1.22wmf10/extensions/TimedMediaHandler/handlers/OggHandler/PEAR/File_Ogg:/a/common/php-1.22wmf10:/usr/local/lib/php:/usr/share/php') in /usr/local/apache/common-local/wmf-config/CommonSettings.php on line 2632
Update of MediaWiki localisation messages failed
sync failed
reedy@tin:/a/common$
Worked around in the laziest way possible - copied the wmf9 file to wmf10
reedy@tin:/a/common$ scap test2wiki to 1.22wmf10 and rebuild l10n cache
Checking syntax... done
Copying to tin from tin.eqiad.wmnet...ok
Done
Updating ExtensionMessages-1.22wmf9.php...
done
Updating LocalisationCache for 1.22wmf9... done
Updating ExtensionMessages-1.22wmf8.php...
done
Updating LocalisationCache for 1.22wmf8... done
Updating ExtensionMessages-1.22wmf10.php...
done
Updating LocalisationCache for 1.22wmf10... done
Version: wmf-deployment
Severity: major
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=60967
https://bugzilla.wikimedia.org/show_bug.cgi?id=63659