trait TR {
    fn fn1(&self);
}

struct S {}

impl TR for S {
    fn fn1(&self) {
        dbg!("fn1");
    }
}

struct SWrap {
    t: Box<dyn TR>
}

impl SWrap {
    fn fn1(&self) {
        self.t.fn1();
    }
}

fn wrap<T: TR + 'static>(t: T) -> SWrap {
    SWrap{t:Box::new(t)}
}

fn main() {
    let s = S{};
    let sw = wrap(s);
    let t = sw.t;
    std::thread::spawn(move || {
        t.fn1();
    });

}