Merge remote-tracking branch 'origin/master' into mpk/add-long-error-message-for-E0311

compiler/rustc_error_codes/src/error_codes/E0695.md

@@ -3,7 +3,6 @@ A `break` statement without a label appeared inside a labeled block.
 Erroneous code example:
 
 ```compile_fail,E0695
-# #![feature(label_break_value)]
 loop {
     'a: {
         break;
@@ -14,7 +13,6 @@ loop {
 Make sure to always label the `break`:
 
 ```
-# #![feature(label_break_value)]
 'l: loop {
     'a: {
         break 'l;
@@ -25,7 +23,6 @@ Make sure to always label the `break`:
 Or if you want to `break` the labeled block:
 
 ```
-# #![feature(label_break_value)]
 loop {
     'a: {
         break 'a;