merge branch 'pr-1908'

  fix build break

LGTMs: @crosbymichael @cyphar
Closes opencontainers#1908

Author: cyphar

.travis.yml

@@ -25,7 +25,7 @@ before_install:
   - echo "deb http://archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list
   - sudo apt-get -qq update
   - sudo apt-get install -y libseccomp-dev/trusty-backports
-  - go get -u github.com/golang/lint/golint
+  - go get -u golang.org/x/lint/golint
   - go get -u github.com/vbatts/git-validation
   - env | grep TRAVIS_