When attempting to run ./scripts/run_kitchen.sh -config config_example.yml I get the following error:

dronutz/cmd/kitchen/kitchen.go:30: cannot use server (type *"google.golang.org/grpc".Server) as type *"
github.com/tedsuo/ot-walkthrough-go/vendor/google.golang.org/grpc".Server in argument to dronutz.RegisterKitchenServer

Environment has Golang 1.8 installed.

go get github.com/tedsuo/ot-walkthrough-go/dronutz/cmd/api

github.com/tedsuo/ot-walkthrough-go/vendor/github.com/lightstep/lightstep-tracer-go/collectorpb

../github.com/tedsuo/ot-walkthrough-go/vendor/github.com/lightstep/lightstep-tracer-go/collectorpb/collector.pb.go:799: cannot use handler (type func("github.com/tedsuo/ot-walkthrough-go/vendor/golang.org/x/net/context".Context, interface {}) (interface {}, error)) as type grpc.UnaryHandler in argument to interceptor
../github.com/tedsuo/ot-walkthrough-go/vendor/github.com/lightstep/lightstep-tracer-go/collectorpb/collector.pb.go:808: cannot use _CollectorService_Report_Handler (type func(interface {}, "github.com/tedsuo/ot-walkthrough-go/vendor/golang.org/x/net/context".Context, func(interface {}) error, grpc.UnaryServerInterceptor) (interface {}, error)) as type grpc.methodHandler in field value

go version
go version go1.8.3 linux/amd64

note: I'm not familiar enough with the go environment to understand the issue well enough. So forgive me for beginner golang mistakes.