// run-rustfix #[derive(Debug)] struct Foo { field: usize, } fn main() { let foo = Foo { field: 0 }; let bar = 3; format!("{foo.field}"); //~ ERROR invalid format string: field access isn't supported format!("{foo.field} {} {bar}", "aa"); //~ ERROR invalid format string: field access isn't supported format!("{foo.field} {} {1} {bar}", "aa", "bb"); //~ ERROR invalid format string: field access isn't supported format!("{foo.field} {} {baz}", "aa", baz = 3); //~ ERROR invalid format string: field access isn't supported format!("{foo.field:?} {} {baz}", "aa", baz = 3); //~ ERROR invalid format string: field access isn't supported format!("{foo.field:#?} {} {baz}", "aa", baz = 3); //~ ERROR invalid format string: field access isn't supported format!("{foo.field:.3} {} {baz}", "aa", baz = 3); //~ ERROR invalid format string: field access isn't supported }