Sounds like you're in a network with particularly misbehaved firewalls. The initial phase of the auto-setup is very fast, since it only checks file paths. The network part might be slow if some part of your network infrastructure messes with connections and cuts them without properly resetting, resulting in super long timeouts.
Not sure what you expect in such a situation.
> a broken install.
No you don't, unless it's an extremely old or shitty library you chose to dep on, since things build, run their tests, and only install when those pass. The 6 pages of output help you identify which tests failed and maybe why. Also, often test failures are simply because you have a system the author didn't write for, which hurts just as much with the other packaging systems.