I found that there are some javac warning from test entry test/jdk/java/util/concurrent/tck/JSR166TestCase.java#default:

/home/yansendao/git/jdk/test/jdk/java/util/concurrent/tck/ThreadPoolExecutorSubclassTest.java:2010: warning: [removal] finalize() in ThreadPoolExecutor has been deprecated and marked for removal
            protected void finalize() {
                           ^
/home/yansendao/git/jdk/test/jdk/java/util/concurrent/tck/ThreadPoolExecutorSubclassTest.java:2011: warning: [removal] finalize() in ThreadPoolExecutor has been deprecated and marked for removal
                super.finalize();
                     ^
Note: /home/yansendao/git/jdk/test/jdk/java/util/concurrent/tck/JSR166TestCase.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
2 warnings


And there are two '@SuppressWarnings("removal")' in test/jdk/java/util/concurrent/tck/ExecutorsTest.java and test/jdk/java/util/concurrent/tck/JSR166TestCase.java is unnecessary.