@withoutboats FWIW I’ve always considered error-chain to be something of hack and wish it didn’t have to exist, and I expect other solutions to appear. Both the existence of error-chain and its popularity in my mind speak to a weakness of the language and std. I hope though that even as error-chain is adopted it doesn’t prevent use of other error handling techniques, that it interoperates well.
It would be a fine result for me if error-chain got bumped to 1.0 basically as-is, with the understanding that error handling will continue to evolve, that there may be an error-chain 2.0, that other solutions might deprecate it completely.