Not working with iron 0.6

I recently updated to iron 0.6, so I updated mount to 0.4 and staticfile to 0.5, and now it won't compile with the following error:

`the trait for<'r, 'r, 'r> std::ops::Fn<(&'r mut iron::Request<'r, 'r>,)> is not implemented for staticfile::Static`
`required because of the requirements on the impl of iron::Handler for staticfile::Static`

on this line:

`mount.mount(prefix, Static::new(Path::new(path)));`