travis: do not cache in node v6

isaacs · isaacs · commit a2cd07fca4ef · 2019-08-15T15:15:56.000-07:00
This seems to break every time a dependency is updated.  Not sure why
node 6 is any different than any other environment, but it's probably
not worth debugging any further.
diff --git a/.travis.yml b/.travis.yml
@@ -25,6 +25,7 @@ matrix:
       env: DEPLOY_VERSION=testing
     - node_js: "6"
       env: DEPLOY_VERSION=testing
+      cache: false
 notifications:
     slack: npm-inc:kRqQjto7YbINqHPb1X6nS3g8
 install:
