build view: http://sca00cmg.us.oracle.com/cgi-bin/buildview.cgi?user=&buildname=jdk8u-install-cpu1&submit=by+build+name
build log: http://release-jdk8.us.oracle.com:8080/hudson/job/8-2-build-windows-amd64-cygwin/9792/console

Looks like the build is failing in unit tests:

[ OK ] InstallJudgeTest.embedded (218 ms)
[ RUN ] InstallJudgeTest.external
InstallJudgeTestXml environment variable not set. The test does nothing.
[ OK ] InstallJudgeTest.external (0 ms)
[----------] 2 tests from InstallJudgeTest (218 ms total)

[----------] Global test environment tear-down
[==========] 20 tests from 4 test cases ran. (231 ms total)
[ PASSED ] 20 tests.
share/rules/All.gmk:48: recipe for target 'run_unittests' failed