I've received e-mail from SonarSource:

From: SonarSource Team <hello@sonarsource.email>
Subject: SonarCloud analysis with Java 8 no longer supported after Oct. 20: Upgrade to Java 11 now!

Hello,

My name is Thomas. I am the Product Marketing Manager for SonarCloud. Today, I have an important message for you.

It appears that you are still using Java 8 for the analysis of your projects. The version of Java installed in the scanner environment should be upgraded to at least Java 11 by October 2020.

Please upgrade these projects now:

mediawiki-extensions-WikibaseLexeme (Wikimedia Foundation)
mediawiki-extensions-EntitySchema (Wikimedia Foundation)
mediawiki-extensions-PageTriage (Wikimedia Foundation)
mediawiki-extensions-Echo (Wikimedia Foundation)
mediawiki-extensions-Wikispeech (Wikimedia Foundation)
mediawiki-extensions-WikibaseQualityConstraints (Wikimedia Foundation)
mediawiki-extensions-AdvancedSearch (Wikimedia Foundation)
Elasticsearch extra plugins (Wikimedia Foundation)
Wikidata Query Service (Wikimedia Foundation)
mediawiki-extensions-Wikibase (Wikimedia Foundation)
mediawiki-extensions-MachineVision (Wikimedia Foundation)
mediawiki-extensions-GrowthExperiments (Wikimedia Foundation)
mediawiki-extensions-WikibaseMediaInfo (Wikimedia Foundation)
mediawiki-extensions-Translate (Wikimedia Foundation)
mediawiki-services-push-notifications (Wikimedia Foundation)
mediawiki-extensions-Cite (Wikimedia Foundation)
mediawiki-extensions-ORES (Wikimedia Foundation)
mediawiki-extensions-GlobalWatchlist (Wikimedia Foundation)
mediawiki-extensions-MobileFrontend (Wikimedia Foundation)
mediawiki-extensions-CirrusSearch (Wikimedia Foundation)
mediawiki-extensions-Popups (Wikimedia Foundation)
mediawiki-core (Wikimedia Foundation)
mediawiki-extensions-Flow (Wikimedia Foundation)

You will find some help on our documentation here. If you have any questions, please ask them on the Community forum.

Best regards,

Thomas Olivier
Product Marketing Manager