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error[E0277]: the trait bound `B: Bar` is not satisfied
--> $DIR/wf-check-fn-def.rs:11:5
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LL | mop // NOTE: no function pointer, but function zst item
| ^^^ the trait `Bar` is not implemented for `B`
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note: required by a bound in `mop`
--> $DIR/wf-check-fn-def.rs:10:15
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LL | fn mop<B: Bar>(bar: B) { bar.bar() }
| ^^^ required by this bound in `mop`
help: consider restricting type parameter `B` with trait `Bar`
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LL | type FooFn<B: Bar> = impl FnOnce(B);
| +++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.
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