Cannot make deps

[ediweissmann]

>  mock-ec2-metadata (master) $ go version
go version go1.13.4 darwin/amd64
>  mock-ec2-metadata (master) $ make deps
go: github.com/NYTimes/gizmo@v1.2.8 requires
	contrib.go.opencensus.io/exporter/ocagent@v0.4.6 requires
	github.com/census-instrumentation/opencensus-proto@v0.1.0-0.20181214143942-ba49f56771b8: invalid pseudo-version: version before v0.1.0 would have negative patch number
make: *** [deps] Error 1