[bobbby]

Error message states

Do not post about the alpha/RC version of elm-upgrade on reddit, twitter, HN , discourse etc

That's already an issue about alpha.elm-lang.org being broken, changing it to point at package.elm-lang.org gets me further but the next set of errors are so unhelpful I'm giving up.

[masklinn]

It's just telling you that it's pointless to post about issues on social media because the tool is in alpha and is obviously going to fail in many cases…

[leshow]

Funny how it was recommended at the start of this thread, in light of that.