travis: send emails iff commit caused the build to start failing

This setting should ensure that email notifications are sent *only* when the commit caused the build to start failing. That is, no more "the build is still failing" spam. As an alternative we could consider disabling email notifications outright and possibly enable IRC notifications instead. (cherry picked from commit 541b3ec)
NixOS · Mar 16, 2017 · b86fd7d · b86fd7d
1 parent 98cc721
commit b86fd7d
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/.travis.yml b/.travis.yml
@@ -18,3 +18,8 @@ matrix:
 env:
     global:
         - GITHUB_TOKEN=5edaaf1017f691ed34e7f80878f8f5fbd071603f
+
+notifications:
+    email:
+        on_success: never
+        on_failure: change