Update travis file
diff --git a/pkgs/io/.travis.yml b/pkgs/io/.travis.yml
index ccd3815..205a404 100644
--- a/pkgs/io/.travis.yml
+++ b/pkgs/io/.travis.yml
@@ -1,20 +1,18 @@
language: dart
-sudo: false
+
dart:
- dev
- stable
-cache:
- directories:
- - $HOME/.pub-cache
+
dart_task:
- - test: --platform vm
- install_dartium: true
+ - test
- dartanalyzer
- dartfmt
-matrix:
- # Only run dartfmt checks with stable.
- exclude:
- - dart: dev
- dart_task: dartfmt
- - dart: dev
- dart_task: dartanalyzer
+
+# Only building master means that we don't run two builds for each pull request.
+branches:
+ only: [master]
+
+cache:
+ directories:
+ - $HOME/.pub-cache
