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trait From<Src> {
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type Output;
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fn from(src: Src) -> <Self as From<Src>>::Output;
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}
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trait To: Sized {
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fn to<Dst: From<Self>>(self) ->
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<Dst as From<Self>>::Dst
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//~^ ERROR cannot find associated type `Dst` in trait `From`
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{
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From::from(self)
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}
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}
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fn main() {}
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