April 20, 2021 Rust DC event

Author: scooter-dangle

draft/2021-04-07-this-week-in-rust.md

@@ -138,6 +138,7 @@ decision. Express your opinions now.
 * [April 7, Indianapolis, IN, US - Indy.rs - with Social Distancing - Indy Rust](https://www.meetup.com/indyrs/events/jhfstryccgbkb/)
 * [April 13, Seattle, WA, US - Monthly Meetup - Seattle Rust Meetup](https://www.meetup.com/Seattle-Rust-Meetup/events/gskksryccgbrb/)
 * [April 13, Saarbrücken, Saarland, DE - **Rust Saar** 10u16](https://www.meetup.com/de-DE/Rust-Saar/events/276873622/)
+* [April 20, Washington, DC, US - The Rust Borrow Checker—A Deep Dive - Rust DC](https://www.meetup.com/RustDC/events/ntvrgsyccgblb)
 
 ### North America