travis: switch to container-based trusty (#2550)

[i3/i3] / .travis.yml

diff --git a/.travis.yml b/.travis.yml
index f97443355feb96b78683a5d9580db6fe158e21bc..63f69ac860438bb508f214bbde48f0cae1a77ac2 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-sudo: required
+sudo: false
 dist: trusty
 services:
   - docker