error[E0308]: mismatched types
  --> $DIR/break-while-condition.rs:9:20
   |
LL |           let _: ! = {
   |  ____________________^
LL | |             'a: while break 'a {};
LL | |         };
   | |_________^ expected `!`, found `()`
   |
   = note:   expected type `!`
           found unit type `()`

error[E0308]: mismatched types
  --> $DIR/break-while-condition.rs:16:13
   |
LL | /             while false {
LL | |                 break
LL | |             }
   | |_____________^ expected `!`, found `()`
   |
   = note:   expected type `!`
           found unit type `()`
   = note: `while` loops evaluate to unit type `()`
help: consider adding a diverging expression here
   |
LL ~             }
LL +             /* `loop {}` or `panic!("...")` */
   |

error[E0308]: mismatched types
  --> $DIR/break-while-condition.rs:24:13
   |
LL | /             while false {
LL | |                 return
LL | |             }
   | |_____________^ expected `!`, found `()`
   |
   = note:   expected type `!`
           found unit type `()`
   = note: `while` loops evaluate to unit type `()`
help: consider adding a diverging expression here
   |
LL ~             }
LL +             /* `loop {}` or `panic!("...")` */
   |

error: aborting due to 3 previous errors

For more information about this error, try `rustc --explain E0308`.