First of all, congrats for the project. It's awesome how fast it runs and how simple is to setup everything!

I think this actually broke AWS Cross account functionality (PR: #212). I am trying to store the dumps on a S3 bucket in another account.

When you use list_buckets the S3 Client won't return the buckets from another account. Do you remember why get_bucket_accelerate_configuration was breaking at first place?

Also the list_buckets operation requires s3:ListAllMyBuckets on the s3:* account level not on a bucket level so maybe switching to the list_bucket operation to list the files inside of a S3 bucket would also improve the security in terms of policy.

Let me know how I can help!

PS. Just tested with v0.9.6 and I am able to write/access the dumps to a S3 bucket in another account.