wal-e/wal-e — pull request #142 by fdr (2014-10-07 18:31:55+00:00)
Title: Make test_backup_push_fetch more forgiving to S3 race conditions

It's possible for a read-after-write not to see the new upload
immediately, causing spurious failure.

Spin for a *short* while attempting to make progress rather than
annoying the person running the test.