I'm on the opposite side here, the slim standard library is something I enjoy with Rust. I can pick and choose from a multitude of different libraries with different trade-offs, strong suits and so on without being locked to one single implementation. I don't know what the guarantees for the standard library for Go is, but Rust's is very strict, you better be damn sure the design once something goes into `std` is near perfect and thought through, there are already mistakes, deprecations and design mistakes in Rust's standard library that will forever be there. Similar to how Python has both `urllib` and `urllib2`, and others like it, I'm of the opinion that a big standard library is where good libraries go to die once the stability guarantees come into play; though being able to do so much when scripting with Python is certainly a boon.