Hello,The special Jib profile run-test-prebuilt is used when running tests through Mach 5. This profile is now used as the base for other profiles which requires that the profile always has a target platform configured. It should be the build platform by default, but if they testedProfile input variable is set, it should be the target platform of that profile.
Bug: https://bugs.openjdk.java.net/browse/JDK-8184075 Webrev: http://cr.openjdk.java.net/~erikj/8184075 /Erik
