workaround for travis error: '/tmp/go-build965383597/github.com/ubclaunchpad/cumulus/blockchain/_obj/test_utils.go:73: undefined: math/rand.Uint64'
workaround for travis error: '/tmp/go-build965383597/github.com/ubclaunchpad/cumulus/blockchain/_obj/test_utils.go:73: undefined: math/rand.Uint64'

ubclaunchpad/cumulus,ubclaunchpad/cumulus