As it says on the subject line. I encountered this issue attempting to store dates prior to the epoch (1970-01-01). I checked for an issue in JIRA and GitHub, but I didn't see anything related and wanted to raise it as a discussion before I filed an issue.
MRE: fn test_date32_builder() { let mut date_32_builder = Date32Builder::new(1); date_32_builder.append_value(-50).unwrap(); let date_32_array = date_32_builder.finish(); println!("{:?}", date_32_array); // panics} *Result:* PrimitiveArray<Date32> [ thread 'demo::tests::test_date32_builder' panicked at 'called `Option::unwrap()` on a `None` value', /home/eric/.cargo/git/checkouts/arrow-3a9cfebb6b7b2bdc/f7cf157/rust/arrow/src/array/array_primitive.rs:226:54 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace