Hey @rustlang twitter: any particular reason that there isn't an instance of std::error::Error for Arc<dyn std::error::Error>?
Would be quite useful when you want a cloneable dyn error for just exploring things without being bogged down in error handling intricacies...
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Either way, you can't meaningfully get what
@klaehnr wants which is presumably a catch all error type via Arc that itself impls Error. Side question, Sian do you know if specialization is planned to allow overlap?
You definitely could write `impl<E: Error + ?Sized> Error for Arc<E>`.There's nothing incoherent about it.
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The `Sized` bound doesn't need to be there
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