Trying to install MW 1.31 (using mw-31-00-git as dbname) fails with:
Install
Setting up database... done
Creating tables... done
Creating database user... done
Populating default interwiki table... done
Initialising statistics... done
Generating secret keys... done
Prevent running unneeded updates... done
Creating administrator user account...
[9fafa63c00d1142f94cf4b4b] /mw-31-00-git/mw-config/index.php?page=Install InvalidArgumentException from line 80 of ...\mw-31-00-git\includes\libs\rdbms\database\DatabaseDomain.php: Domain has too few or too many parts.
Backtrace:
#0 ...\mw-31-00-git\includes\libs\rdbms\loadbalancer\LoadBalancer.php(938): Wikimedia\Rdbms\DatabaseDomain::newFromId(string)
#1 ...\mw-31-00-git\includes\libs\rdbms\loadbalancer\LoadBalancer.php(867): Wikimedia\Rdbms\LoadBalancer->openForeignConnection(integer, string, integer)
#2 ...\mw-31-00-git\includes\libs\rdbms\loadbalancer\LoadBalancer.php(746): Wikimedia\Rdbms\LoadBalancer->openConnection(integer, string, integer)
#3 ...\mw-31-00-git\includes\libs\rdbms\loadbalancer\LoadBalancer.php(831): Wikimedia\Rdbms\LoadBalancer->getConnection(integer, array, string, integer)
#4 ...\mw-31-00-git\includes\jobqueue\JobQueueDB.php(783): Wikimedia\Rdbms\LoadBalancer->getConnectionRef(integer, array, string, integer)
#5 ...\mw-31-00-git\includes\jobqueue\JobQueueDB.php(764): JobQueueDB->getDB(integer)
#6 ...\mw-31-00-git\includes\jobqueue\JobQueueDB.php(187): JobQueueDB->getMasterDB()
#7 ...\mw-31-00-git\includes\jobqueue\JobQueue.php(336): JobQueueDB->doBatchPush(array, integer)
#8 ...\mw-31-00-git\includes\jobqueue\JobQueue.php(306): JobQueue->batchPush(array, integer)
#9 ...\mw-31-00-git\includes\jobqueue\JobQueueGroup.php(154): JobQueue->push(array)
#10 ...\mw-31-00-git\includes\user\UserGroupMembership.php(162): JobQueueGroup->push(array)
#11 ...\mw-31-00-git\includes\user\User.php(3662): UserGroupMembership->insert(boolean)
#12 ...\mw-31-00-git\includes\installer\Installer.php(1666): User->addGroup(string)
#13 ...\mw-31-00-git\includes\installer\Installer.php(1575): Installer->createSysop(MysqlInstaller)
#14 ...\mw-31-00-git\includes\installer\WebInstallerInstall.php(44): Installer->performInstallation(array, array)
#15 ...\mw-31-00-git\includes\installer\WebInstaller.php(281): WebInstallerInstall->execute()
#16 ...\mw-31-00-git\mw-config\index.php(79): WebInstaller->execute(array)
#17 ...\mw-31-00-git\mw-config\index.php(38): wfInstallerMain()
#18 {main}