The vec already gets allocated with capacity == length https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#161 https://doc.rust-lang.org/nightly/src/allo

The vec already gets allocated with capacity == length https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#161 https://doc.rust-lang.org/nightly/src/alloc/slice.rs.html#16...