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This seems like a particularly egregious example Delegation. This seems so important because everywhere everyone seems to beat it over your head of how Rust prefers composition over inheritance and how amazing that is. But as a newcomer it seems like the language does not make it easy to do composition. Without proper delegation you have to manually write implementations for newtype methods and traits, when a delegation syntax would be extremely helpful to remove the boilerplate especially when you have so many methods. It seems like a tremendous effort has been put into this RFC and seems to be reasonably popular.
Macros, probably. For example this one, that was already made by someone else, published on crates.io and is actively maintained. If the feature is already possible in rust, but requires a lot of boilerplate, then macros are the answer 99% of the time.