What is going into /run that is taking up so much space? Generally /run consists of things like pid files and sockets. If it's filling up, there's likely a bigger problem going on somewhere.
i think that HHVM stores sort of a cache there, i'll see if i can move it elsewhere.
@filipac /run is a tmpfs partition, which means that all its data is stored in RAM (it might be swapped out to disk if you have swap enabled, but usually it's in RAM). I recommend not moving it somewhere else because that means that the data would be on a regular partition so accessing it would be much slower.
