Intermittent off-by-one-second failure in TimeKvpParserTest.testContinuousRelativeInterval

Tests run: 13, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 0.053 sec <<< FAILURE!
testContinuousRelativeInterval(org.geoserver.ows.kvp.TimeKvpParserTest)  Time elapsed: 5 sec  <<< FAILURE!
junit.framework.AssertionFailedError: expected:<Tue May 02 00:38:52 UTC 2017> but was:<Tue May 02 00:38:53 UTC 2017>
	at junit.framework.Assert.fail(Assert.java:57)
	at junit.framework.Assert.failNotEquals(Assert.java:329)
	at junit.framework.Assert.assertEquals(Assert.java:78)
	at junit.framework.Assert.assertEquals(Assert.java:86)
	at junit.framework.TestCase.assertEquals(TestCase.java:253)
	at org.geoserver.ows.kvp.TimeKvpParserTest.testContinuousRelativeInterval(TimeKvpParserTest.java:266)

for (int i = 0; i < 10000000; i++) {
// [...]
}