Idiomatically, it gives you `err` and you do `if err != nil {return err}`. While in rust you mostly do `.unwrap` and panic.

It's not in the type system, but it's idiomatic

Get a key from a map and forget to check the error.

which mean an unexpected behavior could go unnoticed for a long time.

I'd prefer a loud crash over that.

Well look at the failure modes in the original article.

In the original PHP code, all worked, only it didn't properly check for bots.

The new Rust code did a loud crash and took off half of the internet.