#662 Move HOMEBREW_NO_AUTO_UPDATE to env section

.travis.yml

@@ -41,7 +41,10 @@ jobs:
       install:
         # brew takes horribly long to update itself despite the above caching
         # attempt; only bzr install if it's not on the $PATH
-        - test $(which bzr) || HOMEBREW_NO_AUTO_UPDATE=1 brew install bzr
+        - test $(which bzr) || brew install bzr
+      env:
+        - HOMEBREW_NO_AUTO_UPDATE=1
+        - DEPTESTBYPASS501=1
       script:
         # OSX as of El Capitan sets an exit trap that interacts poorly with how
         # travis seems to spawn these shells; if set -e is set, then it can cause