The default timeout in jtreg is 2 mins. I get the following times for these two tests:

                           2.66GHz Dual Core PC Sun-Blade 2500:
                           -------------------- ---------------
CheckAttributedTree.java: 2:47 3:47
TreeScannerTest.java: 2:07 2:30
TreeScannerTest.java has been replaced by two tests that subclass it, JavacTreeScannerTest.java and SourceTreeScannerTest.java.

In addition, TreePosTest.java suffers from the same problem.