cargo-mutants 23.9.1

[sourcefrog]

Lots more mutation patterns!

• Mutate the known collection types BinaryHeap, BTreeSet, HashSet, LinkedList, and VecDeque to generate empty and one-element collections using T::new() and T::from_iter(..).

• Mutate known container types like Arc, Box, Cell, Mutex, Rc, RefCell into T::new(a).

• Mutate unknown types that look like containers or collections T<A> or T<'a, A>' and try to construct them from an A with T::from_iter, T::new, and T::from.

• Minimum Rust version updated to 1.70.

• Mutate Cow<'_, T> into Owned and Borrowed variants.

• Mutate functions returning &[T] and &mut [T] to return leaked vecs of values.

• Mutate (A, B, C, ...) into the product of all replacements for a, b, c, ...

• The combination of options --list --diff --json is now supported, and emits a diff key in the JSON.

• Mutate -> impl Iterator<Item = A> to produce empty and one-element iterators of the item type.

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This discussion was created from the release cargo-mutants 23.9.1.