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trait Original {
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fn f() -> impl Fn();
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}
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trait Erased {
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fn f(&self) -> Box<dyn Fn()>;
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}
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impl<T: Original> Erased for T {
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fn f(&self) -> Box<dyn Fn()> {
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Box::new(<T as Original>::f())
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//~^ ERROR the associated type `impl Fn()` may not live long enough
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}
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}
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fn main () {}
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