Migration error reported by user on Discord:
Error: failed to migrate source aws on destination bigquery : failed to call Migrate: rpc error: code = Unknown desc = googleapi: Error 400: Provided Schema does not match Table aws_backup_vault_recovery_points. Field composite_member_identifier is missing in new schema, invalid
It seems like composite_member_identifier was newly added a week or two ago, but this shouldn't be a breaking change.