That's a side-effect of upgrading to Wildfly 10 which is built with Java 8. So now Keycloak also requires Java 8 to build.

On Dec 14, 2015 4:52 PM, "Bill Burke" <bburke@redhat.com> wrote:
  java.lang.UnsupportedClassVersionError:
org/jboss/as/subsystem/test/AbstractSubsystemBaseTest : Unsupported
major.minor version 52.0


I guess I have to upgrade to Java 1.8?
--
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com
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