How do I view output for a failing release phase?

Issue

Your release phase step has failed and you want to know why.

Resolution

You can view release phase output via the CLI or Dashboard as described here: https://devcenter.heroku.com/articles/release-phase#checking-release-status-logs

For programmatically retrieving release phase output you can use the API as described here: https://devcenter.heroku.com/articles/release-phase#checking-release-status-programmatically