//@ run-rustfix #[derive(Debug)] struct Foo { field: usize, } fn main() { let foo = Foo { field: 0 }; let bar = 3; format!("{0}", foo.field); //~ ERROR invalid format string: field access isn't supported format!("{1} {} {bar}", "aa", foo.field); //~ ERROR invalid format string: field access isn't supported format!("{2} {} {1} {bar}", "aa", "bb", foo.field); //~ ERROR invalid format string: field access isn't supported format!("{1} {} {baz}", "aa", foo.field, baz = 3); //~ ERROR invalid format string: field access isn't supported format!("{1:?} {} {baz}", "aa", foo.field, baz = 3); //~ ERROR invalid format string: field access isn't supported format!("{1:#?} {} {baz}", "aa", foo.field, baz = 3); //~ ERROR invalid format string: field access isn't supported format!("{1:.3} {} {baz}", "aa", foo.field, baz = 3); //~ ERROR invalid format string: field access isn't supported }