Merge pull request #1 from rust-lang/master

update from upstream

Author: richkadel

.github/ISSUE_TEMPLATE/ice.md

@@ -14,7 +14,7 @@ http://blog.pnkfx.org/blog/2019/11/18/rust-bug-minimization-patterns/
 
 ### Code
 
-```
+```Rust
 <code>
 ```
 

.github/ISSUE_TEMPLATE/tracking_issue.md

@@ -1,6 +1,6 @@
 ---
 name: Tracking Issue
-about: A tracking issue for a feature in Rust.
+about: A tracking issue for an accepted feature or RFC in Rust.
 title: Tracking Issue for XXX
 labels: C-tracking-issue
 ---