use std::fmt::Debug; fn make_dyn_star() { let i = 42usize; let dyn_i: dyn* Debug = i as dyn* Debug; //~^ ERROR casting `usize` as `dyn* Debug` is invalid //~| ERROR `dyn*` trait objects are experimental //~| ERROR `dyn*` trait objects are experimental } fn main() { make_dyn_star(); }