vm: merge "not executing programs" into "no output"
vm: merge "not executing programs" into "no output"

Frequently it's the same condition.
In one case there is just a stray error message on console
that turns the crash into "not executing programs".
While in another case there is no stray message,
and then it's detected as "no output".

google/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller