1 error[E0277]: `<impl IntoIterator as IntoIterator>::Item` doesn't implement `std::fmt::Display`
2 --> $DIR/issue-97760.rs:4:20
5 | ^ `<impl IntoIterator as IntoIterator>::Item` cannot be formatted with the default formatter
7 = help: the trait `std::fmt::Display` is not implemented for `<impl IntoIterator as IntoIterator>::Item`
8 = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
9 = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
10 help: introduce a type parameter with a trait bound instead of using `impl Trait`
12 LL ~ pub fn print_values<I: IntoIterator>(values: &I)
13 LL ~ where <I as IntoIterator>::Item: std::fmt::Display {
16 error: aborting due to previous error
18 For more information about this error, try `rustc --explain E0277`.