I can't seem to monitor unix servers in jruby (using JRuby 9.1.13.0 btw). I'm getting the following error: ``` mode not supported for this object: rw org/nio4r/Selector.java:107:in `register' ... ``` It might be that nio4r just doesn't work with unix sockets in jruby, but I still had to ask, as they're selectable in JRuby using `IO.select`.