Rake uploads:migrate_to_s3 executa indefinidamente

@pnoeric O loop infinito foi corrigido em FIX: Infinite loop in migrate_to_s3 rake task · discourse/discourse@baae0e7 · GitHub

@pfaffman O problema deve estar corrigido em FIX: Restore to S3 didn't work without env variables · discourse/discourse@c6b411f · GitHub