Our chat is now on Discord

We no longer use irc.mozilla.org. Fixes #1671.

Author: kzys

README.md

@@ -16,7 +16,7 @@ of the following ways:
 
 - [File a new issue](https://github.com/rust-lang/crates.io/issues/new)
 - Email [[email protected]](mailto:[email protected])
-- Chat on irc.mozilla.org in the [#rust-infra](https://kiwiirc.com/client/irc.mozilla.org:+6667/#rust-infra) channel
+- Chat on ops > #crates-io channel on https://discord.gg/rust-lang
 
 A volunteer will get back to you as soon as possible.