Fix code for Rust nightly
Fix code for Rust nightly

carbidegames/glium,bvssvni/glium,TyOverby/glium,binsoftware/glium,nicokoch/glium,cpjreynolds/glium,tomaka/glium,sdotz/glium,christopheraugustus/glium,acolley/glium,glium/glium,caldwell/glium