Hangs are classified as ZefFailure, that's not right #6
Description
Apparently timeouts on a new revision are misclassified as ZefFailure:
https://github.com/perl6/Blin/blob/b535dc0d727a61047199dd6ee67d07d626941965/lib/Blin/Processing.pm6#L413-L417
See also rakudo/rakudo#2553