new_null_array(
            &DataType::Struct(Fields::from(vec![Field::new(
                "non_nullable_deeper_inner",
                DataType::Dictionary(Box::new(DataType::Utf8), Box::new(DataType::Int32)),
                false,
            )])),
            1,
        );

called `Option::unwrap()` on a `None` value
stack backtrace:
   0: rust_begin_unwind
             at /rustc/f8a913b1381e90379c7ca63ac2b88b9518936628/library/std/src/panicking.rs:695:5
   1: core::panicking::panic_fmt
             at /rustc/f8a913b1381e90379c7ca63ac2b88b9518936628/library/core/src/panicking.rs:75:14
   2: core::panicking::panic
             at /rustc/f8a913b1381e90379c7ca63ac2b88b9518936628/library/core/src/panicking.rs:145:5
   3: core::option::unwrap_failed
             at /rustc/f8a913b1381e90379c7ca63ac2b88b9518936628/library/core/src/option.rs:2015:5
   4: core::option::Option<T>::unwrap
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/option.rs:978:21
   5: arrow_data::data::ArrayData::new_null
             at /Users/danielking/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/arrow-data-55.0.0/src/data.rs:633:33
   6: arrow_data::data::ArrayData::new_null::{{closure}}
             at /Users/danielking/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/arrow-data-55.0.0/src/data.rs:628:34
   7: core::iter::adapters::map::map_fold::{{closure}}
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/iter/adapters/map.rs:88:28
   8: <core::slice::iter::Iter<T> as core::iter::traits::iterator::Iterator>::fold
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/slice/iter/macros.rs:255:27
   9: <core::iter::adapters::map::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/iter/adapters/map.rs:128:9
  10: core::iter::traits::iterator::Iterator::for_each
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/iter/traits/iterator.rs:800:9
  11: alloc::vec::Vec<T,A>::extend_trusted
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/alloc/src/vec/mod.rs:3565:17
  12: <alloc::vec::Vec<T,A> as alloc::vec::spec_extend::SpecExtend<T,I>>::spec_extend
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/alloc/src/vec/spec_extend.rs:29:9
  13: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter_nested::SpecFromIterNested<T,I>>::from_iter
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/alloc/src/vec/spec_from_iter_nested.rs:62:9
  14: <alloc::vec::Vec<T> as alloc::vec::spec_from_iter::SpecFromIter<T,I>>::from_iter
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/alloc/src/vec/spec_from_iter.rs:34:9
  15: <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/alloc/src/vec/mod.rs:3424:9
  16: core::iter::traits::iterator::Iterator::collect
             at /Users/danielking/.rustup/toolchains/nightly-2025-02-24-aarch64-apple-darwin/lib/rustlib/src/rust/library/core/src/iter/traits/iterator.rs:1971:9
  17: arrow_data::data::ArrayData::new_null
             at /Users/danielking/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/arrow-data-55.0.0/src/data.rs:626:21
  18: arrow_array::array::new_null_array
             at /Users/danielking/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/arrow-array-55.0.0/src/array/mod.rs:867:16