The panic was happening in the `Init` but it was due to the fact that
HasWork wrongfully returned True when it should've returned false.

Most executors use that already and while ExecutionSegment.Scale gives
the same result in a lot of cases - it doesn't in some. This potentially
can lead to small (1 VU/iteration) discrepancies but more importantly
panics. Especially in cases where the differences are when one returns a
0 and the other a 1 for a given value.