Cache only .m2/repository, not all of .m2.

Hopefully this will fix "Could not find artifact org.apache.maven.plugins:maven-checkstyle-plugin:jar:3.1.1 in google-maven-central" from #5363 Compare CL 310633203 for Truth. RELNOTES=n/a PiperOrigin-RevId: 348522883
google · Dec 21, 2020 · 98b785a · 98b785a
1 parent 99a4d3a
commit 98b785a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/.travis.yml b/.travis.yml
@@ -25,7 +25,7 @@ after_failure:
 
 cache:
   directories:
-  - $HOME/.m2
+    - $HOME/.m2/repository
 
 env:
   global: