rsync with cloudfuse

I'M trying to rsync between two dirs using:

rsync -atO --ignore-existing /src 1.1.1.1:/target/

The target dir is mounted via cloudfuse and the source dir is a regular one.

I get an error:

rsync: failed to set times on "/target/somefile": Function not implemented (38) rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1070) [sender=3.0.9]