Error[E0599]: no method named `to_socket_addrs` found for struct `std::string::String` in

Question

Error[E0599]: no method named `to_socket_addrs` found for struct `std::string::String` in

the current scope
--> src\odyssey.rs:124:62
|
124 | let addrs = format!("{}:{}", c.host, c.port).to_socket_addrs().await;
| ^^^^^^^^^^^^^^^ method not found in `std::string::String`
|
= help: items from traits can only be used if the trait is in scope
= note: the following traits are implemented but not in scope; perhaps add a `use` for one of them:
candidate #1: `use std::net::ToSocketAddrs;`
candidate #2: `use tokio::net::addr::sealed::ToSocketAddrsPriv;`
В чём может быть проблема?. Я добавил use tokio::net::ToSocketAddrs;