Install process, command 'make dev', Failing

[GavinDonnelly]

When running command make dev for installing vault it fails on line 522 of vault/mount.go
Error: undefined: consts in consts.ReplicationSecondary

I am running this on an AWS instance, ubuntu 16.04 with go1.8.1.

Full Console Output:

go generate 
==> Removing old directory...
==> Building...
Number of parallel builds: 1

-->     linux/amd64: github.com/hashicorp/vault

1 errors occurred:
--> linux/amd64 error: exit status 2
Stderr: # github.com/hashicorp/vault/vault
vault/mount.go:522: undefined: consts in consts.ReplicationSecondary

Makefile:19: recipe for target 'dev' failed
make: *** [dev] Error 1

This looks like a legitimate go error to me, I understand currently the master branch is failing but I would have the install would be unaffected.

[GavinDonnelly]

Thank You