// run-pass use std::fmt::Display; static BYTE: u8 = 33; fn main() { let x: &(dyn 'static + Display) = &BYTE; let y: Box = Box::new(BYTE); let _: &dyn (Display) = &BYTE; let _: &dyn (::std::fmt::Display) = &BYTE; let xstr = format!("{}", x); let ystr = format!("{}", y); assert_eq!(xstr, "33"); assert_eq!(ystr, "33"); }