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