Force gem update --system before deployment.

Try to prevent #44159.
2017-11-05 23:09:29 +08:00 · 2017-11-05 23:09:29 +08:00 · 9cfdabaf3c
commit 9cfdabaf3c
parent 51e2247948
1 changed files with 1 additions and 0 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -286,6 +286,7 @@ before_deploy:
          rm -rf obj/build/dist/doc &&
          cp -r obj/build/dist/* deploy/$TRAVIS_COMMIT;
      fi
+  - travis_retry gem update --system

 deploy:
  - provider: s3