The following test cases time out in wikidiff2 after more than 60 seconds
- https://de.wikipedia.org/w/index.php?title=Portal:Biologie/Fehlende_Artikel/Missing_Topics&diff=next&oldid=174323656
- https://en.wikipedia.org/w/api.php?action=compare&format=json&fromrev=743677512&torev=707077023
- https://en.wikipedia.org/w/api.php?action=compare&format=json&fromrev=743654163&torev=734840850
- https://en.wikipedia.org//w/api.php?action=compare&format=json&fromrev=744105788&torev=744105782
Since HHVM only checks the timeout flag after wikidiff2 returns, the requests actually run for longer than 60 seconds, despite what the error messages say.