See lines 19-22

piston_window reexports not working

extern crate piston;
extern crate piston_window;
extern crate graphics;
extern crate gfx_graphics;

use piston::input::*;
use piston::window::{Window as Win, AdvancedWindow, WindowSettings};
use piston_window::{PistonWindow as Window};

fn main() {
    let mut window: Window = WindowSettings::new("Hello Piston!", [640, 480])
        .exit_on_esc(true).fullscreen(true).build().unwrap();

    for w in window {
        while let Some(e) = w.events.borrow_mut().next() {
            match e {
                Event::Render(RenderArgs { ext_dt, width, height, .. } ) => {
                    w.draw_2d(|c, g| {
                        // This one works...
                        let rectangle = piston_window::Rectangle::new([0.5; 4]);
                        // but this one breaks! It's just a reexported module.
                        // let rectangle = graphics::Rectangle::new([0.5; 4]);
                        piston_window::clear(graphics::color::WHITE, g);
                        rectangle.draw([width as f64 / 2 as f64, height as f64 / 2 as f64, 10., 10.], &c.draw_state, c.transform, g); 
                    });
                },
                _ => {  }
            }
        }
    }
}