Running parser tests:
bawolff@Bawolff-L:/var/www/w/git/tests$ php parserTests.php --regex ifexist
This is MediaWiki version 1.24alpha (81be7ed).
A database error has occurred. Did you forget to run maintenance/update.php after upgrading? See: https://www.mediawiki.org/wiki/Manual:Upgrading#Run_the_update_script
Query: CREATE TEMPORARY TABLE wikidb.user (LIKE wikidb.user)
Error: 1066 Not unique table/alias: 'wikidb.user' (localhost)
After which I noticed that I no longer had a User table, since the unit tests thought it was the thing it was duplicating to, and dropped the original.
Note: I had my local wiki set up to use LBFactoryMulti. I don't know if that's related.