Receiving error when trying to destroy Heroku Postgres database:
Failed to destroy your database Yikes! The database was not destroyed due to an internal error.
Customers receive this error when the Heroku Postgres database is shared/attached to some other app, in order to destroy the Heroku Postgres database you will have to detach it from the shared app and then re-try database destroy.
heroku pg:info --app sushi heroku addons:detach HEROKU_POSTGRESQL_[COLOR]_URL --app sushi heroku addons:destroy HEROKU_POSTGRESQL_[COLOR]_URL --app sushi