The test failes time to time.The log:

After 30000: 8256936 free
After 31000: 8158496 free
After 32000: 8245376 free
After 33000: 8162696 free
After 34000: 8239000 free
After 35000: 8194512 free
After 36000: 8209040 free
After 37000: 8190480 free
After 38000: 8256936 free
After 39000: 8166896 free
After 40000: 8198464 free
After 41000: 8202424 free
After 42000: 8125232 free
After 43000: 8213976 free
After 44000: 8225648 free
After 45000: 8243224 free
After 46000: 8163184 free
After 47000: 8240280 free
After 48000: 8201176 free
After 49000: 8260928 free
After 50000: 8200264 free
After 51000: 8125736 free
After 52000: 8052456 free
After 53000: 8069560 free
After 54000: 8226776 free
After 55000: 8244632 free
After 56000: 8122992 free
After 57000: 8204824 free
After 58000: 8238568 free
After 59000: 8208960 free
After 60000: 8110976 free
After 61000: 8127256 free
After 62000: 8173824 free
After 63000: 8196192 free
After 64000: 8124488 free
After 65000: 8243000 free
After 66000: 8125056 free
After 67000: 8192824 free
After 68000: 8235752 free
After 69000: 8160360 free
After 70000: 8250688 free
After 71000: 8126880 free
After 72000: 8090112 free
After 73000: 8212376 free
After 74000: 8250824 free
After 75000: 8170568 free
After 76000: 8116440 free
After 77000: 8246048 free
After 78000: 8206712 free
After 79000: 8113784 free
After 80000: 8205008 free
After 81000: 8239248 free
After 82000: 8121320 free
After 83000: 8240104 free
After 84000: 8056904 free
After 85000: 8172544 free
After 86000: 8201336 free
After 87000: 3999112 free
----------System.err:(11/657)----------
java.lang.RuntimeException: Memory halved: there's a leak
        at TestTitledBorderLeak.main(TestTitledBorderLeak.java:46)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.base/java.lang.reflect.Method.invoke(Method.java:578)
        at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
        at java.base/java.lang.Thread.run(Thread.java:1596)

JavaTest Message: Test threw exception: java.lang.RuntimeException: Memory halved: there's a leak