Current tier2 tests fail because of this:

$ CONF=linux-x86_64-server-fastdebug make images run-test TEST=sun/nio/cs/TestMS950.java

STDOUT:
c2b: u2550, expected:0xF9F9, result:0xA2A4
c2b: u255E, expected:0xF9E9, result:0xA2A5
c2b: u256A, expected:0xF9EA, result:0xA2A6
c2b: u2561, expected:0xF9EB, result:0xA2A7
STDERR:
java.lang.Exception: Failed
        at TestMS950.main(TestMS950.java:148)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.base/java.lang.reflect.Method.invoke(Method.java:564)
        at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:298)
        at java.base/java.lang.Thread.run(Thread.java:832)

I wonder if the test is locale-specific? Test was added recently by JDK-8232161.