Peter W

On the current nightly the `clippy-preview` component is not available. That is the reason why the nightly task on travis was not successful. The update of the log crate was...

It should be possible. I m pretty sure all the rules for `Eq` are true for the `Sender` [ref](https://users.rust-lang.org/t/what-is-the-difference-between-eq-and-partialeq/15751/2)