src/test/ui/macros/issue-30143.rs

   1 use std::fmt::Write;
   2
   3 fn main() {
   4     println!(0);
   5     //~^ ERROR format argument must be a string literal
   6     eprintln!('a');
   7     //~^ ERROR format argument must be a string literal
   8     let mut s = String::new();
   9     writeln!(s, true).unwrap();
  10     //~^ ERROR format argument must be a string literal
  11 }