openjdk6 comes with old certificates I suspect. I haven't found any projects using gradle on travis-ci with https with vanilla openjdk6. We can use http everywhere (ugly) or add certificate into the keystore ourselves (ugly) or continue to rely on the oracle jdk6 we have installed on the server (not ideal long term I suspect) or try to get one of the Apache CI servers working (can't remember what stopped us last time) or ???. If 2_4_X wasn't still active, I wouldn't be too concerned and we could just drop jdk6 from our CI matrix but I suspect we should try to keep for another 12 months.

On Sat, Oct 21, 2017 at 10:05 PM, Cédric Champeau <> wrote:
Why do we need this? Is it because of open jdk not shipping with root certificates?

Le 21 oct. 2017 2:02 PM, <> a écrit :
Repository: groovy
Updated Branches:
  refs/heads/GROOVY_2_4_X 491992fa1 -> 926347356

try bypassing https


Branch: refs/heads/GROOVY_2_4_X
Commit: 926347356630a01732d44db01bb1dc082f2e65fa
Parents: 491992f
Author: paulk <>
Authored: Sat Oct 21 22:02:12 2017 +1000
Committer: paulk <>
Committed: Sat Oct 21 22:02:12 2017 +1000

 gradle/wrapper/ | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gradle/wrapper/ b/gradle/wrapper/
index 38f0a68..65c3f07 100644
--- a/gradle/wrapper/
+++ b/gradle/wrapper/
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME