timeouts in handwritten drivers

[mayant15]

Some handwritten drivers have timeouts. Check.

js-yaml, seed: 71361
jpeg-js, seed: 22093
jpeg-js, seed: 71361

[mayant15]

for jpeg-js the timeouts are legit, these are big big inputs. what's not legit is that the fuzzer stops executing anything after a point, doesn't event time out.