We have encountered a small number of failed jobs in US region between 4:46 AM - 9:17 AM UTC.
Affected jobs finished with Application Error caused by invalid SSL connection to GoodData and we're investigating the issue.
UPDATE Nov 24, 1:42 PM (UTC) - Only projects having custom GoodData domains was affected by this issue. Problem was with validation of a renewed SSL certificate. The fix is deploying right now.