[travis] Made OS X builds failures temporarily allowed
[travis] Made OS X builds failures temporarily allowed

a1lu/Criterion,a1lu/Criterion,am11/Criterion,Snaipe/Criterion,kaidowei/Criterion,Snaipe/Criterion,kaidowei/Criterion,am11/Criterion,Snaipe/Criterion,kaidowei/Criterion,am11/Criterion,offa/Criterion,a1lu/Criterion,a1lu/Criterion,offa/Criterion,am11/Criterion,kaidowei/Criterion,offa/Criterion,offa/Criterion,kaidowei/Criterion,Snaipe/Criterion,a1lu/Criterion,offa/Criterion,am11/Criterion,Snaipe/Criterion