Trying to get a persistent reference working with Iron, not sure how to set an appropriate lifetime here. I want to be able to re-use the controller on different routes.

Cargo.toml

[package]
name = "iron-lifetime"
version = "0.1.0"
edition = "2018"

[dependencies]
iron = "0.6.*"
router = "0.6.*"
persistent = "0.4.0"

main.rs

use iron::prelude::*;
use iron::typemap::Key;
use router::Router;
use persistent::Read;

pub struct Controller;

pub struct Rest {
    controller: Controller,
}

impl Key for &Controller {
    type Value = Self;
}

impl Rest {
    pub fn run(&self) {
        let router = Router::new();
        let mut chain = Chain::new(router);
        chain.link(Read::<&Controller>::both(&self.controller));
        Iron::new(chain).http(format!("0.0.0.0:1234")).ok();
    }
}

fn main() {
    Rest {
        controller: Controller,
    }.run();
}