131     fn next_back(&mut self) -> Option<Self::Item> {  in next_back()  method
145             RangeInner::Owned(ref mut range) => range.next_back(),  in next_back()
582         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
586         assert_eq!(range.next_back(), Some((&"d", &4)));  in test_range_full_unbounded()
587         assert_eq!(range.next_back(), Some((&"c", &3)));  in test_range_full_unbounded()
589         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
597         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
602         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
610         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
617         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
622         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
626         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
634         assert_eq!(range.next_back(), None);  in test_range_full_unbounded()
688         assert_eq!(range.next_back(), None);  in test_range_full_include_right()
690         assert_eq!(range.next_back(), Some((&"b", &2)));  in test_range_full_include_right()
691         assert_eq!(range.next_back(), None);  in test_range_full_include_right()
693         assert_eq!(range.next_back(), Some((&"c", &3)));  in test_range_full_include_right()
694         assert_eq!(range.next_back(), Some((&"b", &2)));  in test_range_full_include_right()
695         assert_eq!(range.next_back(), None);  in test_range_full_include_right()
697         assert_eq!(range.next_back(), Some((&"d", &4)));  in test_range_full_include_right()
698         assert_eq!(range.next_back(), Some((&"c", &3)));  in test_range_full_include_right()
699         assert_eq!(range.next_back(), Some((&"b", &2)));  in test_range_full_include_right()
700         assert_eq!(range.next_back(), None);  in test_range_full_include_right()
702         assert_eq!(range.next_back(), Some((&"d", &4)));  in test_range_full_include_right()
703         assert_eq!(range.next_back(), Some((&"c", &3)));  in test_range_full_include_right()
704         assert_eq!(range.next_back(), Some((&"b", &2)));  in test_range_full_include_right()
705         assert_eq!(range.next_back(), None);  in test_range_full_include_right()