rsync failed to set times on [filename]

This error occurs because the version of rsync on the system cannot preserve modified times for directories.

Run rsync with the following arguments to suppress this warning:

rsync -avPO ./source/* ./destination

Explanation of switches:

a -> Archive mode (do not preserve hard links, ACLs, or extended attributes)
v -> Verbose (I like to know what is happening)
P -> Equivalent to --partial --progress (for long transfers that may be interrupted)
O -> Omit directories from times