Edit 2020-11-23: Rescheduled for 2020-11-25T16:00:00Z
Edit: Postponed a few more days. See Upcoming maintenance for build.ros2.org: 2020-11-25
build.ros2.org will be the first of our build farms to update to 20.04 using the chef-based ros buildfarm deployment utilities (Work in progress: Chef cookbooks for ROS build farm configuration) this will require some downtime during which rosdistro PRs for ROS 2 distributions will be held and dev and PR jobs will not be triggered for ROS 2 distributions.
The ROS 2 build farm doesn’t have an entry on the ROS status page. If I can’t manage to add one before the start of the maintenance window I will use this thread to post updates.
Once the migration is complete similar operations will be scheduled for build.ros.org and ci.ros2.org.