Update rust buildpack

alexcrichton · alexcrichton · commit 2cabce587e6c · 2014-12-24T20:47:07.000-08:00
diff --git a/.buildpacks b/.buildpacks
@@ -1,4 +1,4 @@
 https://github.com/rcaught/heroku-buildpack-cmake#e4e2c9e
-https://github.com/alexcrichton/heroku-buildpack-rust#d7137d3b6
+https://github.com/alexcrichton/heroku-buildpack-rust#6b611b66
 https://github.com/tonycoco/heroku-buildpack-ember-cli#426b308
 https://github.com/ryandotsmith/nginx-buildpack.git#af813ba
