13     assert_eq!(q.steal(), Empty);  in smoke()
17     assert_eq!(q.steal(), Success(1));  in smoke()
18     assert_eq!(q.steal(), Success(2));  in smoke()
19     assert_eq!(q.steal(), Empty);  in smoke()
22     assert_eq!(q.steal(), Success(3));  in smoke()
23     assert_eq!(q.steal(), Empty);  in smoke()
36     let _ = q.steal();  in is_empty()
38     let _ = q.steal();  in is_empty()
43     let _ = q.steal();  in is_empty()
60                     if let Success(v) = q.steal() {  in spsc()
69             assert_eq!(q.steal(), Empty);  in spsc()
103                         if let Success(n) = q.steal() {  in mpmc()
144                     if let Success(x) = q.steal() {  in stampede()
155             if let Success(x) = q.steal() {  in stampede()
187                     if let Success(_) = q.steal() {  in stress()
208                 while let Success(_) = q.steal() {  in stress()
218             while let Success(_) = q.steal() {  in stress()
248                     if let Success(_) = q.steal() {  in no_starvation()
270                     while let Success(_) = q.steal() {  in no_starvation()
328                     if let Success(_) = q.steal() {  in destructors()
349             if let Success(_) = q.steal() {  in destructors()