Print an error message if git crup doesn't run hooks because of an error
Print an error message if git crup doesn't run hooks because of an error

BUG=171501
R=szager@chromium.org


Review URL: https://chromiumcodereview.appspot.com/12040027

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@178357 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

svn2github/chromium-depot-tools,svn2github/chromium-depot-tools,svn2github/chromium-depot-tools