Could you please orphan libopensync-plugin-moto, libopensync-plugin-python and libopensync-plugin-vformat.
These packages were last updated in October 2007. All of them are flagged out-of-date as newer versions are available since january.
I have tried to contact the maintainer via AUR. When he did not answer after a while I contacted him by mail and did not get a response to date(I have sent my mail about 4 weeks ago).

Thanks in advance
Hauke