tests/ui/closures/closure-no-fn-1.stderr

   1 error[E0308]: mismatched types
   2   --> $DIR/closure-no-fn-1.rs:6:29
   3    |
   4 LL |     let foo: fn(u8) -> u8 = |v: u8| { a += v; a };
   5    |              ------------   ^^^^^^^^^^^^^^^^^^^^^ expected fn pointer, found closure
   6    |              |
   7    |              expected due to this
   8    |
   9    = note: expected fn pointer `fn(u8) -> u8`
  10                  found closure `[closure@$DIR/closure-no-fn-1.rs:6:29: 6:36]`
  11 note: closures can only be coerced to `fn` types if they do not capture any variables
  12   --> $DIR/closure-no-fn-1.rs:6:39
  13    |
  14 LL |     let foo: fn(u8) -> u8 = |v: u8| { a += v; a };
  15    |                                       ^ `a` captured here
  16
  17 error: aborting due to previous error
  18
  19 For more information about this error, try `rustc --explain E0308`.