The latest builds are failing due to the prefixes having increased slightly (as side effects of lots of other layers and dependencies) with the switch to MySQL.
https://integration.wikimedia.org/ci/job/mediawiki-extensions-zend/8069/consoleFull
```lang=php
00:06:19.836 1) Flow\Tests\Api\ApiFlowEditPostTest::testEditPost
00:06:19.836 Flow\Exception\CrossWikiException: Interwiki to 'jenkins_u2_mw-un' from 'jenkins_u2_mw-unittest_' not implemented
00:06:19.836
00:06:19.836 /mnt/jenkins-workspace/workspace/mediawiki-extensions-zend/src/extensions/Flow/includes/Model/Workflow.php:195
00:06:19.837 /mnt/jenkins-workspace/workspace/mediawiki-extensions-zend/src/extensions/Flow/includes/Model/Workflow.php:166
00:06:19.837 /mnt/jenkins-workspace/workspace/mediawiki-extensions-zend/src/extensions/Flow/includes/Model/Workflow.php:278
00:06:19.837 /mnt/jenkins-workspace/workspace/mediawiki-extensions-zend/src/extensions/Flow/includes/WorkflowLoaderFactory.php:121
```
Flow (unchanged since the first 2013 prototype):
```lang=sql
CREATE TABLE /*_*/flow_workflow (
5 workflow_id binary(11) not null,
6 workflow_wiki varchar(16) binary not null,
…
```
MediaWiki (unchanged since at least 2007):
```lang=sql
CREATE TABLE /*_*/interwiki (
iw_prefix varchar(32) NOT NULL,
```
**EDIT**: Actually, I'm not sure how this previously worked. Previously, the sqlite wikis were named `my_wiki`. Which, with the phpunit suffix, would also exceed 16 characters.
> ```lang=js
> > "my_wiki-unittest_".length
> 17
> ```