A quick trip to the rust reddit gave me a few good responses: https://www.reddit.com/r/rust/comments/5nl3fk/rust_severely_disappoints_me/dccgjzx/
As a young language, the libraries ecosystem is just coming into being. If one doesn't hop on irc, mailinglists, etc to ask for some advice, discoverability can be a bit hard for sure. But that's not a sign of any problem, just a statement about work that needs to be done. In a young language, needing social connections for discoverability is ok
because the influx of new users is small enough that those mechanisms can handle it, should people choose to engage. It is only when a language attains widespread usage that there need to be "zero interaction" material to ramp people up not just on beginners' questions but on broad ecosystem questions (i.e. what library to use for task X). And that's just because those same social mechanisms fail to scale.
The only conclusion that I think we can draw here is that Rust is not yet in a state where people can use it "in anger" without occasionally asking questions and advice.