I tried run test in jdk9-dev/jdk/test with command
jtreg -v -a . :embedded_compact1
output :
/home/cementovoz/work/jdk9/jdk/test/closed/TEST.groups: group jdk_imageio: file not found: closed/com/sun/image
Error: Unexpected exception occurred! java.lang.NullPointerException
java.lang.NullPointerException
        at com.sun.javatest.TestResultTable$SortingComparator.compare(TestResultTable.java:1484)
        at com.sun.javatest.TestResultTable$SortingComparator.compare(TestResultTable.java:1474)
        at java.util.TimSort.countRunAndMakeAscending(TimSort.java:351)
        at java.util.TimSort.sort(TimSort.java:230)
        at java.util.Arrays.sort(Arrays.java:1438)
        at com.sun.javatest.TestResultTable.sortByName(TestResultTable.java:1524)
        at com.sun.javatest.TestResultTable.getIterator(TestResultTable.java:936)
        at com.sun.javatest.TestResultTable.getIterator(TestResultTable.java:899)
        at com.sun.javatest.Harness.createTreeIterator(Harness.java:813)
        at com.sun.javatest.Harness.runTests(Harness.java:662)
        at com.sun.javatest.Harness.batch(Harness.java:395)
        at com.sun.javatest.regtest.Main.batchHarness(Main.java:2040)
        at com.sun.javatest.regtest.Main.run(Main.java:1239)
        at com.sun.javatest.regtest.Main.run(Main.java:1009)
        at com.sun.javatest.regtest.Main.main(Main.java:923)

but i ran test with command
jtreg -v -a `pwd` :embedded_compact1
tests running successfully

jdk9-dev/ is a clone http://hg.openjdk.java.net/jdk9/dev
and after run script ./get_source.sh http://closedjdk.us.oracle.com/