//@ aux-build:no_debug.rs extern crate no_debug; use no_debug::Bar; struct Foo; fn main() { println!("{:?} {:?}", Foo, Bar); println!("{} {}", Foo, Bar); } //~^^^ ERROR `Foo` doesn't implement `Debug` //~| ERROR `Bar` doesn't implement `Debug` //~^^^^ ERROR `Foo` doesn't implement `std::fmt::Display` //~| ERROR `Bar` doesn't implement `std::fmt::Display`