The documentation style (permanent TOC on the right) seems to copy python's Sphinx style. And you are quite right about the lack of visible effort in making error messages more useful.
The Julia team and community are constantly advancing the frontiers of language design while grounding it in real number crunching applications. I wouldn't be too concerned about trying to have the same documentation and content approach as the Rust community as their goals were to usurp the mindshare of systems programmers (C/C++) with a novel ownership paradigm.
Looking forward to the progress on error messages.