Builds are being canceled by Travis-CI

I’m seeing all builds for projects in the International Business Machines · GitHub org being canceled after running for a short time with the message:
Done: Job Cancelled

Job has been terminated due to insufficient credits balance

Here’s a link to one of the recent builds that was canceled in this manner:

However, when I view the plan info for the “IBM” organization it all appears to be just fine with a credit balance of over 5,000,000 credits.
This is an urgent issue as all our builds are getting canceled after they run for a short time (1-3 minutes or so).

Please help!