1 === testCancelInvalidAwaitables ===
4 === testCancelBeforeAwait ===
9 === testCancelAfterAwait ===
15 === testCancelDuringAwait ===
19 operation was canceled
20 === testCancelFromBeginIOWait ===
25 operation was canceled
27 === testCancelDuringAwait ===
31 operation was canceled
32 === testCancelFromBeginIOWait ===
37 operation was canceled