Resolved
The issue has been resolved: our internal queues cleared up past jobs and processing speeds have returned back to normal.
Monitoring
A fix is in place, but we are continuing to monitor the situation as internal queues clear and processing speeds return back to their normal baselines.
Update
Our engineers have a workaround in place to mitigate impact. We expect the delays will be shortened.
Issue
Engineers are investigating issues with the Heroku platform.
Users may experience long delays in CI, release phase, review apps, and automatic GitHub deploys