| error[E0599]: no method named `map` found for struct `Vec<bool>` in the current scope | |
| --> $DIR/vec-on-unimplemented.rs:3:31 | |
| | | |
| LL | let _ = vec![true, false].map(|v| !v).collect::<Vec<_>>(); | |
| | ^^^ `Vec<bool>` is not an iterator | |
| | | |
| help: call `.into_iter()` first | |
| | | |
| LL | let _ = vec![true, false].into_iter().map(|v| !v).collect::<Vec<_>>(); | |
| | ++++++++++++ | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0599`. |