switch from error-chain to https://github.com/rust-lang-nursery/failure

[snd]

i've used https://github.com/rust-lang-nursery/failure in other projects and found it much nicer to work with than error_chain

It is intended to replace error management based on std::error::Error with a new system based on lessons learned over the past several years, including those learned from experience with quick-error and error-chain.

curious to hear others opinions on it

[debris]

is it interoperable with error-chain errors?

[snd]

i thought it was. though i was running into some issues yesterday with web3::Error which uses error chain. failure requires things implementing Fail to be Sync and Send which is annoying. i'll probably hold off on this for now

[snd]

closing this for now. might reopen at a later date