Avoid cloning refcounted types during folding
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2 changed files with 68 additions and 6 deletions
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@ -33,6 +33,7 @@
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#![feature(derive_default_enum)]
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#![feature(discriminant_kind)]
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#![feature(exhaustive_patterns)]
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#![feature(get_mut_unchecked)]
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#![feature(if_let_guard)]
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#![feature(map_first_last)]
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#![feature(never_type)]
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