let df = df! (
"names" => [
            ["Anne", "Averill", "Adams"].iter().collect::<Series>(),
            ["Brandon", "Brooke", "Borden", "Branson"].iter().collect(),
            ["Camila", "Campbell"].iter().collect(),
            ["Dennis", "Doyle"].iter().collect(),
],

)?;

I get: error[E0277]: a value of type polars::prelude::Series cannot be built from an iterator over elements of type &std::string::String