Error while building loadtest docker server

[goprag]

How to resolve this ?

docker build -t glocalregistry/doorman/doorman-server:v0.1.7 docker/server/
Sending build context to Docker daemon 3.584 kB
Step 1 : FROM golang:1.5
1.5: Pulling from library/golang
357ea8c3d80b: Pull complete
52befadefd24: Pull complete
3c0732d5313c: Pull complete
fee55c622298: Pull complete
70ff2aeff174: Pull complete
01195e06f03d: Pull complete
2f0f050412f9: Pull complete
Digest: sha256:3be07b667a868a246b9cee4ddc5ecce2ad1e211958bd6043a25fc1d19d55e6ba
Status: Downloaded newer image for golang:1.5
---> 99668503de15
Step 2 : ADD config.yml .
---> cc142bba6fac
Removing intermediate container 5d804b03735d
Step 3 : RUN go get github.com/youtube/doorman/go/cmd/doorman
---> Running in 2afcdbff0a9d

github.com/youtube/doorman/proto/doorman

src/github.com/youtube/doorman/proto/doorman/doorman.pb.go:879: cannot use _Capacity_Discovery_Handler (type func(interface {}, context.Context, func(interface {}) error) (interface {}, error)) as type grpc.methodHandler in field value
src/github.com/youtube/doorman/proto/doorman/doorman.pb.go:883: cannot use _Capacity_GetCapacity_Handler (type func(interface {}, context.Context, func(interface {}) error) (interface {}, error)) as type grpc.methodHandler in field value
src/github.com/youtube/doorman/proto/doorman/doorman.pb.go:887: cannot use _Capacity_GetServerCapacity_Handler (type func(interface {}, context.Context, func(interface {}) error) (interface {}, error)) as type grpc.methodHandler in field value
src/github.com/youtube/doorman/proto/doorman/doorman.pb.go:891: cannot use _Capacity_ReleaseCapacity_Handler (type func(interface {}, context.Context, func(interface {}) error) (interface {}, error)) as type grpc.methodHandler in field value