Misc 2 @WaffleLapkin @BoxyUwU

Warning: this quiz is still "work-in-progress", some questions might not have good explanations (or any at all), formatting/structure/titles/etc are not final, and so on. You might want to return here on a later date.

struct Data {
    name: String,
    bones: Vec<String>,
}

impl std::fmt::Debug for Data {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        write!(f, "{}", &self.name)?;
        for bone in &self.bones {
            write!(f, " {}", bone)?;
        }
        writeln!(f, "")
    }
}

fn main() {
    let data = Data {
        name: "Boxy".into(),
        bones: vec!["fakebone1".into(), "fakebone2".into()],
    };
    dbg!(data)
}

error[E0308]: mismatched types
  --> examples/misc_2.rs:21:5
   |
16 | fn main() {
   |          - expected `()` because of default return type
...
21 |     dbg!(data)
   |     ^^^^^^^^^^ expected `()`, found `Data`
   |
   = note: this error originates in the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)

For more information about this error, try `rustc --explain E0308`.
error: could not compile `code` (example "misc_2") due to 1 previous error