travis: roll forward the versions of Go that we test

diff --git a/.travis.yml b/.travis.yml
index 4683922..1e686ce 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ sudo: required
 dist: trusty
 
 go:
-  - 1.5.4
-  - 1.6.2
+  - 1.6.x
+  - 1.7.x
   - tip
 
 env:
@@ -23,12 +23,6 @@ matrix:
   allow_failures:
     - go: tip
   exclude:
-    - go: 1.5.4
-      env: arm
-    - go: 1.5.4
-      env: arm64
-    - go: 1.5.4
-      env: ppc64le
     - go: tip
       env: arm
     - go: tip