while let Some((ds_id, work)) = self
            .work
            .get_next(&mut stop_at)
            .or_else(|| retry.pop_front())
        {
            if flags.lossy && random() && random() {
                // Skip a job that needs to be done, moving it to the back of
                // the list.  This exercises job dependency tracking in the face
                // of arbitrary reordering.
                info!(self.log, "[lossy] skipping {}", ds_id);
                retry.push_back((ds_id, work));
                continue;
            } else if let Some((ds_id, work)) = self
                .do_work(ds_id, work, flags, reqwest_client, dss, region)
                .await?
            {
                // We failed, add this job to the retry queue
                retry.push_back((ds_id, work));
            }
        }