The Wikimedia continuous integration system will be unavailable while some scheduled maintenance is done.
When: Thursday 3rd 2016 for two hours between 16:00 UTC to 18:00 UTC.
Impact: During that time, you will still be able to send patches to Gerrit but no CI jobs will be run nor will patches be automatically merged when someone votes "Code-Review +2". All patches sent during the operations will be sent to the CI system for you as a convenience.
Why: The maintenance will move the core of the CI system (Jenkins and Zuul) from an aged server to a fresh new machine.
More info: It will be done by Antoine Musso, Tyler Cipriani and Daniel Zahn. You will be able to watch progress on IRC in the #wikimedia-operations channel. See also: https://phabricator.wikimedia.org/T95757