This doesn't seem like hindering anything. There's no legal block, there's no stopping you from RTFM and following the steps, it's not as if the author is even hiding the steps.
Paying for convenience isn't
a hinderance.
You just want the convenience at zero price.
Shameless plug: We just started supporting rustc compiler caching and released it as part of our support for open source projects: https://crave.io/#opensource
We're showcasing the Libra project to start with and would be up for adding other projects that the community is interested in.
We're a small startup building infrastructure for developers. We do address problems like what you describe: enforcement of the exact library version requirements for each codebase, reduction of artifact egress costs, integration into the Jenkins workflow as well as into IDE for devs and QA, and more.
We've been looking for game devs who'd be interested in what we're doing.
Please reach out if you're interested.
We fall for this because a subset of us has been provoked to point out the obvious flaw in the headline or the summary and another subset has been provoked into defending the part that isn't flawed.
I alternated between feeling like this was a question worth answering and feeling like a dick for answering this with your own words.