[stable-point]

I think this highlights that while there are easy solutions to the problem the OP faced, they're difficult for a newcomer to discover. (I have been using Rust for a couple of months and I'd also have reached for serde and maybe serde_derive to solve the problem).

Hopefully this is something the Libz Blitz[0] will solve with their Rust Cookbook[1]. (You could almost but not quite arrive at as simple a solution from chapters 1 and 2).

[0] https://blog.rust-lang.org/2017/05/05/libz-blitz.html

[1] https://brson.github.io/rust-cookbook/intro.html

[leshow]

The curious thing is that OP linked to the error handling docs, and the solution with Box<Error> is right there.