---

yaml
---
r: 227283
b: refs/heads/auto
c: 75c6428
h: refs/heads/master
i:
  227281: 953735a
  227279: 4ffb4e6
v: v3

Author: nathankleyn

[refs]

@@ -8,7 +8,7 @@ refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: 55752a4bdeae5dad77875b7702a14882fd12725b
+refs/heads/auto: 75c6428e1bf2f5564392276642d962163d8a9809
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336
 refs/tags/0.2: 1754d02027f2924bed83b0160ee340c7f41d5ea1

branches/auto/src/librustc_borrowck/diagnostics.rs

@@ -179,6 +179,14 @@ let mut x: i64 = 1;
 let mut y: Box<_> = Box::new(&mut x);
 **y = 2;
 ```
+
+It can also be fixed by using a type with interior mutability, such as `Cell` or
+`RefCell`:
+
+```
+let y: Cell<_> = Cell::new(1);
+y.set(2);
+```
 "##,
 
 E0387: r##"