[unscaled]

Well, before Go 1.13 came out, every decent production codebase in Go had to import Dave Cheney's pkg/errors[1] unless you totally gave up the idea of having useful error traces.

Go 1.13 has incorporated most of what this package does into the standard library. It really doesn't matter much whether the code is in a de-facto standard package or folded into the standard library IMHO, but Rust could do the same.

[1]: https://github.com/pkg/errors

[steveklabnik]

Rust did partially do this; one of the previous generation of packages here, failure, had most of its ideas eventually rolled into std::errror::Error, which enabled this next generation of packages (anyhow, thiserror, miette, eyre... the only one I'm not sure about is snafu, which did exist before, but I'm not sure if it got more improvements due to these changes or not.)