In December 2023, a minor miracle happened: async fn in traits shipped. As of Rust 1.39, we already had free-standing async functions: pub async fn read_hosts () -> eyre :: Result < Vec < u8 >> { // etc. } …and async functions in impl blocks: impl HostReader { pub async fn read_hosts ( & self ) -> eyre :: Result < Vec < u8 >> { // etc. } } But we did not have async functions in traits:



