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error[E0308]: `match` arms have incompatible types
--> $DIR/closure-no-fn-4.rs:5:18
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LL | let _: fn(usize) -> usize = match true {
| _________________________________-
LL | | true => |a| a + 1,
| | --------- this is found to be of type `fn(usize) -> usize`
LL | | false => |a| a - b,
| | ^^^^^^^^^ expected fn pointer, found closure
LL | |
LL | | };
| |_____- `match` arms have incompatible types
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= note: expected fn pointer `fn(usize) -> usize`
found closure `{closure@$DIR/closure-no-fn-4.rs:5:18: 5:21}`
note: closures can only be coerced to `fn` types if they do not capture any variables
--> $DIR/closure-no-fn-4.rs:5:26
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LL | false => |a| a - b,
| ^ `b` captured here
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0308`.
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