Currently, my Rails app deploys end with this:
Aug 25 04:53:18 PM ==> Uploading build...
Aug 25 04:53:43 PM ==> Build uploaded in 14s
Aug 25 04:53:43 PM ==> Build successful 🎉
Aug 25 04:53:43 PM ==> Deploying...
I.e., I get success messages from all the "..." logs except for the final one.