See the following at T/L's nightly build log:

---------------------------------------------
 java/time/test/java/time/format/TestDateTimeTextProvider.java
---------------------------------------------
    nightly-b95_2013-06-13 java/time/test/java/time/format/TestDateTimeTextProvider.java FAIL ON ALL PLATFORMS
    JavaTest Message: Test threw exception: java.lang.Exception: failures: 12
---
test.java.time.format.TestDateTimeTextProvider.test_getText(java.time.temporal.TemporalField,java.lang.Number,java.time.format.TextStyle,java.util.Locale,java.lang.String): failure
java.lang.AssertionError: expected [Fev] but found [fev]
at org.testng.Assert.fail(Assert.java:89)
at org.testng.Assert.failNotEquals(Assert.java:489)
at org.testng.Assert.assertEquals(Assert.java:118)
at org.testng.Assert.assertEquals(Assert.java:171)
at org.testng.Assert.assertEquals(Assert.java:181)
at test.java.time.format.TestDateTimeTextProvider.test_getText(TestDateTimeTextProvider.java:182)
at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:491)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:80)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:715)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:907)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1237)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
at org.testng.TestRunner.privateRun(TestRunner.java:767)
at org.testng.TestRunner.run(TestRunner.java:617)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
at org.testng.SuiteRunner.run(SuiteRunner.java:240)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:51)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:85)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1197)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1122)
at org.testng.TestNG.run(TestNG.java:1030)
at com.sun.javatest.regtest.TestNGAction$TestNGRunner.main(TestNGAction.java:155)
at com.sun.javatest.regtest.TestNGAction$TestNGRunner.main(TestNGAction.java:139)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:491)
at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
at java.lang.Thread.run(Thread.java:724)
---

Possibly the regression caused by the fix to JDK-7040556.