[dt-test] automated tests failed

[DITrack Testbot]

=== trunk, r1711 by vss: FAIL (1 tests failed)
 * test failed: cmd-update.tc (tail of the error log follows)
    DTTEST: executing 'rm -rf /X/testbox/ditrack/trunk.r1711/tests/cmd-update.tc/work'
    DTTEST: executing 'svnadmin create /X/testbox/ditrack/trunk.r1711/tests/cmd-update.tc/work/repo'
    DTTEST: executing 'gunzip -c /X/testbox/ditrack/trunk.r1711/tests/../tests/share/repo/a.gz| svnadmin -q load /X/testbox/ditrack/trunk.r1711/tests/cmd-update.tc/work/repo'
    DTTEST: executing 'svn co -q file:///X/testbox/ditrack/trunk.r1711/tests/cmd-update.tc/work/repo/issues /X/testbox/ditrack/trunk.r1711/tests/cmd-update.tc/work/db'
    DTTEST: executing 'cp -rf /X/testbox/ditrack/trunk.r1711/tests/cmd-update.tc/work/db /X/testbox/ditrack/trunk.r1711/tests/cmd-update.tc/work/db__'
    DTTEST: executing 'diff -u update.expected update.output'
    Traceback (most recent call last):
      File "./test.py", line 43, in ?
        tc2.diff("update.expected", "update.output")
      File "/X/testbox/ditrack/trunk.r1711/tests/dttest/dttest.py", line 115, in diff
        self.system("diff -u " + file1 + " " + file2)
      File "/X/testbox/ditrack/trunk.r1711/tests/dttest/dttest.py", line 346, in system
        assert(rc == 0)
    AssertionError