duplicated block id: 1
size: 12 cleaned lines of code
in 2 files:
 - src/sync/mpsc.rs (422:435)
 - src/sync/mpsc.rs (470:483)

duplicated block id: 2
size: 7 cleaned lines of code
in 2 files:
 - src/sync/mpsc.rs (411:418)
 - src/sync/mpsc.rs (459:466)