Heroku deployments are now working normally again. Note that some builds may require a restart before passing.
Posted 13 days ago. Jun 09, 2017 - 21:45 UTC
Due to PECL package manager service issues (https://pecl.php.net) it is taking longer than expected to prepare and deploy the fix for Heroku build failures. We hope to have this resolved as soon as possible.
Posted 14 days ago. Jun 09, 2017 - 15:53 UTC
We have identified the issue and are preparing a fix to roll out shortly.
Posted 14 days ago. Jun 09, 2017 - 15:16 UTC
We are seeing issues with builds deploying to Heroku failing. We are investigating now.