error[E0308]: mismatched types
  --> $DIR/issue-14091.rs:2:5
   |
LL |     assert!(1,1);
   |     ^^^^^^^^^^^^^ expected bool, found integer
   |
   = note: expected type `bool`
              found type `{integer}`

error: aborting due to previous error

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