Temporarily use the old Travis image.

Use it until travis-ci/travis-ci#8891 is fixed.
2017-12-13 04:23:12 +08:00 · 2017-12-13 04:23:12 +08:00 · c0c26a649e
commit c0c26a649e
parent 707d070815
1 changed files with 1 additions and 0 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -1,6 +1,7 @@
 language: shell
 sudo: required
 dist: trusty
+group: deprecated-2017Q4
 services:
  - docker