Yashur, why Vishmaster?

I think the questioning was structured like this:
1. Are you Mafia? No.
2. Does the description mention combat (witch, warrior, rider, assassin)? No.
3. Can you kill? Yes.

Manic doesn't fit (all answers would be true), nor do witch and rider (2 false answers). And obviously, not one of the greens.

A peaceful Vishmaster, who is neither a witch nor a rider, should have answered no/yes/no = 100% innocent.

Judging by the answers, Vishmaster is either Mafia or a drug addict, confusing the town. In both cases, executing him will do more good than harm.