Backup does nothing, but reports "successful"

Thanks for sharing the bugreport data with me, it was pivotal to locating the problem.

After examination of this and related issues, I believe the cause is a timeout that is not handled correctly. Set --read-write-timeout=10m to work around it until the next stable is out, or use canary build 2.0.1.108 or later.

I have written some more details here: