I think also on April 1 the API for runtime is changing too, from Google:
Creating new functions using the Cloud Functions API
When you create a new function using the Cloud Functions API, you must specify the runtime for your function in the CloudFunction resource passed to the create method; for example:
You can specify any of the following valid runtimes: "go111", "nodejs6", "nodejs8" or "python37".
We’re a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.