got it figured, there are some more pre-reqs
sudo apt-get install mercurial
/go/src/github.com/mattermost/platform$ >
go get code.google.com/p/log4go
go get github.com/braintree/manners
go get github.com/disintegration/imaging
go get github.com/go-gorp/gorp
go get github.com/go-ldap/ldap
go get github.com/go-sql-driver/mysql
go get github.com/goamz/goamz/aws
go get github.com/goamz/goamz/s3
go get github.com/golang/freetype
go get github.com/gorilla/mux
go get github.com/gorilla/websocket
go get github.com/lib/pq
go get github.com/mssola/user_agent
go get github.com/pborman/uuid
go get github.com/rwcarlsen/goexif/exif
go get golang.org/x/crypto/bcrypt
go get gopkg.in/fsnotify.v1
go get gopkg.in/throttled/throttled.v1
go get gopkg.in/throttled/throttled.v1/store