115         let drain_end = self.ranges.len();  in intersect()  localVariable
117         let mut ita = (0..drain_end).into_iter();  in intersect()
136         self.ranges.drain(..drain_end);  in intersect()
157         let drain_end = self.ranges.len();  in difference()  localVariable
159         'LOOP: while a < drain_end && b < other.ranges.len() {  in difference()
223         while a < drain_end {  in difference()
228         self.ranges.drain(..drain_end);  in difference()
261         let drain_end = self.ranges.len();  in negate()  localVariable
269         for i in 1..drain_end {  in negate()
274         if self.ranges[drain_end - 1].upper() < I::Bound::max_value() {  in negate()
275             let lower = self.ranges[drain_end - 1].upper().increment();  in negate()
278         self.ranges.drain(..drain_end);  in negate()
292         let drain_end = self.ranges.len();  in canonicalize()  localVariable
293         for oldi in 0..drain_end {  in canonicalize()
296             if self.ranges.len() > drain_end {  in canonicalize()
306         self.ranges.drain(..drain_end);  in canonicalize()