Errors

RivetError

TODO: Document the derive macro TODO: Document .build() -> anyhow

Error chains

• TODO: use .chain().filter_map(|x| x.downcast_ref::<T>()) otherwise it'll only check the top-most error
• TODO: use #[source] in thiserror variants in order for wrapped errors to show up in .chain()
• TODO: #[from] automatically adds #[source]