The evening of the 19th of January a new version of an analytics library was merged into our code base and deployed around 9PM UTC.
Our customers started to notice builds not working around midnight UTC for any customer who was triggering them via our API, soon after we declared an incident. We determined the source of the issue we rolled back to a previous version.
We are always working to improve our system and tools and take seriously any impact the changes have to our customers. We appreciate the patience of the customers that were impacted by this change.