running 6 tests test tests::format_die_one ... ok test tests::zip_empty_iterators ... ok test tests::zip_equal_ranges ... ok test tests::zip_lines ... ok test tests::zip_mismatched_ranges ... ok test tests::zip_single_element_iterators ... ok test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out