let _ = conn.execute("ALTER TABLE table ADD COLUMN column int4[] DEFAULT '{}'",&[]);let stmt = conn.prepare("SELECT column FROM table").unwrap();for rowin stmt.query(&[]).unwrap(){//row.result_descriptions() is &[(column, Int4Array)]let _:ArrayBase<Option<i32>> =row.get(0u);// panics at error retrieving column 0: end of file', src/lib.rs:1552}