Instrument a Rust Application with OpenTelemetry

I gave a quick look through the article's samples and I think the tracing crate has much better ergonomics. Wrapping a lot of code in lambdas to handle spans ends up making a code base pretty nasty in my experience.

Being able to simply tag a function for instrumentation (and skip/choose which arguments to include), the ability to enter/exit spans as one liners rather than wrapping a chunk of code in a block, and being able to easily add additional attributes/data to those spans without type wrangling are all quality of life improvements that I don't want to give up.

The article's crates might be able to do the same things, I haven't looked into its documentation.