error: argument never used
  --> $DIR/issue-92267.rs:3:34
   |
LL | pub fn main() { println!("🦀%%%", 0) }
   |                                   ^ argument never used
   |
note: format specifiers use curly braces, and the conversion specifier `
      ` is unknown or unsupported
  --> $DIR/issue-92267.rs:3:30
   |
LL | pub fn main() { println!("🦀%%%", 0) }
   |                               ^^
   = note: printf formatting not supported; see the documentation for `std::fmt`

error: aborting due to previous error