Turn我需要更新Heroku宝石。尽管如此，他们错误的消息传递很糟糕，我不得不去支持票据了解这一点，因为我只是过时了一两个小版本，你不会指望在这个级别发生重大变化。哦，好。

I'm trying to follow the instructions on migrating to Cedar (except I did a major rewrite so this isn't a branch of the previous app but a separate one) and stuck at the db migration step. I installed the pgbackup and heroku postgresql addons but get this result:

j3(master) : heroku pgbackups:restore DATABASE heroku pgbackups:url --app dada-foe-110 --app something-something-4311 32mQkEpWyJdfplOnXhlCnCRsoxYE12-05-25 --app something-something-4311 EXTERNAL_BACKUP <---restore--- b002.dump

! WARNING: Destructive Action ! This command will affect the app: something-something-4311 ! To proceed, type "something-something-4311" or re-run this command with --confirm something-something-4311

[entered app name]

Retrieving... done

! An error occurred and your restore did not finish. ! The backup url is invalid. Use pgbackups:url to generate a new temporary URL.

Turns out I needed to update the Heroku gem. Poor error messaging from them, though, that I had to go to a support ticket to understand this since I was only out of date one or two minor versions and you wouldn't expect breaking changes at that level. Oh well.