I installed godep but I then get the error:
godep: WARNING: Go version (go1.6) & $GO15VENDOREXPERIMENT= wants to enable the vendor experiment, but disabling because a Godep workspace (Godeps/_workspace) exists
Installing go from brew automatically installs the latest (1.6) so I think that's where the issue is but I even tried installing Go Version Manager and then go1.5.1 it still doesnt work.
How did you install Go1.5.1?