My personal experience with the Go stdlib is that it practices "defensive programming" pretty well. For example HttpClient defaults. It's what you would expect from a language with go's objectives, but it's still something I appreciate (even if it forces me to do things right when I don't want to!).
HttpClient has no usable defaults. In fact, you can't even make a usable file downloader because of the way it handles timeouts, you have to write your own.
