go get github.com/prometheus/client_model/go fails #24
Description
I get errors when using go get to install this package.
branch_lister (RELENG-551) $ go get
# github.com/prometheus/client_model/go
../../../prometheus/client_model/go/metrics.pb.go:96:31: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:141:27: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:179:29: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:218:30: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:265:29: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:317:29: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:357:31: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:410:28: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:461:28: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:544:34: undefined: proto.InternalMessageInfo
../../../prometheus/client_model/go/metrics.pb.go:544:34: too many errors
OS: Ubuntu 18.04
GO VERSION: 1.10.3