travis: make config validator happy

darwin · darwin · commit 8a8cb5525e35 · 2020-02-23T12:43:31.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
-sudo: true
 dist: trusty
+os: linux
 language: clojure
 notifications:
   email:
