#![allow(unreachable_code)]


fn main() {
    println!("{:?}", {
        use std::collections::hash_map::{self, HashMap}; fn test() -> Result<(), ()> { let map: HashMap<String, String> = HashMap::new(); match map.entry("foo") { hash_map::Entry::Vacant(vacancy) => vacancy.insert("bar".to_owned()), hash_map::Entry::Occupied(_) => return Err(()) } Ok(()) }
    });
}


/* ~~~~=== stderr ===~~~~
   Compiling playground v0.0.1 (/playground)
error[E0308]: mismatched types
 --> src/main.rs:6:155
  |
6 |         use std::collections::hash_map::{self, HashMap}; fn test() -> Result<(), ()> { let map: HashMap<String, String> = HashMap::new(); match map.entry("foo") { hash_map::Entry::Vacant(vacancy) => vacancy.insert("bar".to_owned()), hash_map::Entry::Occupied(_) => return Err(()) } Ok(()) }
  |                                                                                                                                                           ^^^^^
  |                                                                                                                                                           |
  |                                                                                                                                                           expected struct `std::string::String`, found reference
  |                                                                                                                                                           help: try using a conversion method: `"foo".to_string()`
  |
  = note: expected type `std::string::String`
             found type `&'static str`

error[E0308]: mismatched types
 --> src/main.rs:6:139
  |
6 |         use std::collections::hash_map::{self, HashMap}; fn test() -> Result<(), ()> { let map: HashMap<String, String> = HashMap::new(); match map.entry("foo") { hash_map::Entry::Vacant(vacancy) => vacancy.insert("bar".to_owned()), hash_map::Entry::Occupied(_) => return Err(()) } Ok(()) }
  |                                                                                                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected (), found mutable reference
  |
  = note: expected type `()`
             found type `&mut std::string::String`

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0308`.
error: Could not compile `playground`.

To learn more, run the command again with --verbose.

*/

/* ~~~~=== stdout ===~~~~

*/