panic: runtime error: index out of range [2] with length 2

goroutine 1 [running]:
main.bruteForce(0x1, 0x1, 0x4, {0x40000b40d8, 0x1, 0xd8ae0?})
	/tmp/cf-worker-2473072140/verifierB.go:73 +0x294
main.main()
	/tmp/cf-worker-2473072140/verifierB.go:122 +0x55c