Merge pull request rust-lang#35723 from brson/beta-next

Bump boostrap compilers

Author: alexcrichton

src/stage0.txt

@@ -12,6 +12,6 @@
 # tarball for a stable release you'll likely see `1.x.0-$date` where `1.x.0` was
 # released on `$date`
 
-rustc: beta-2016-07-06
-rustc_key: 411fd48b
+rustc: 1.11.0-2016-08-16
+rustc_key: 39b92f95
 cargo: nightly-2016-07-05