Revert "Make unsync::Lazy<T, F> covariant in F"
#236
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Absolutely no need to apologize here, it's very useful to know what we actually could do here (pick one of covariance/dropck). IF you don't want to see the work going to waste, consider submitting a similar PR to rust-lang/rust :0) For std, I think we must get both bits right, and there we #[may dangle]. |
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bors r+ |
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Indeed, #233 introduced a regression w.r.t
#[may_dangle]😔, apologies