gistfile1.rs

struct Foo<'a> {
    a: Vec<String>,
    b: Vec<Vec<&'a String>>
}

impl<'a> Foo<'a> {
    fn bar(&mut self) {
        let mut c = vec![];
        c.push(self.a.get(0));
        ^~~~~~~~~~~~~~~~~ error: cannot infer an appropriate lifetime for autoref due to conflicting requirements
        self.b.push(c);
    }
}