anne@Bo:~/web_monitor$ cargo run
   Compiling web_monitor v0.1.0 (/home/anne/web_monitor)
error[E0507]: cannot move out of `self.url` which is behind a shared reference
  --> src/main.rs:30:31
   |
30 |         let resp = client.get(self.url).send().expect("Got an error calling for the website");
   |                               ^^^^^^^^ move occurs because `self.url` has type `String`, which does not implement the `Copy` trait

For more information about this error, try `rustc --explain E0507`.
error: could not compile `web_monitor` due to previous error