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#![feature(allocator_api)]
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#![feature(const_trait_impl)]
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use core::convert::{From, TryFrom};
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//~^ ERROR
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//~| ERROR
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use std::pin::Pin;
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use std::alloc::Allocator;
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impl<T: ?Sized, A: Allocator> const From<Box<T, A>> for Pin<Box<T, A>>
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where
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A: 'static,
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{}
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pub fn main() {}
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