rustcMaster: Fix version

Changed files
+1 -1
pkgs
development
compilers
rustc
+1 -1
pkgs/development/compilers/rustc/head.nix
···
*/
-
with ((import ./common.nix) {inherit stdenv; version = "0.12.0-pre-7fbbfe6bf"; });
+
with ((import ./common.nix) {inherit stdenv; version = "0.12.0-pre-9a68da740"; });
let snapshot = if stdenv.system == "i686-linux"
then "5c2132b65f45c21b43d28de6a9460978b1a7b08a"