use diesel::migrations::RunMigrationsError; use diesel::result; use rss; use hyper; use reqwest; use log; use std::io; error_chain! { foreign_links { LogError(log::SetLoggerError); MigrationError(RunMigrationsError); DieselResultError(result::Error); RSSError(rss::Error); HyperError(hyper::error::Error); ReqError(reqwest::Error); IoError(io::Error); } }