For the parfait build hudson log , there are few error show:
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Make[2]: Leaving directory '/cygdrive/c/HUDSON/workspace/parfait_JDK8u-cpu_windows/jdk8u141/jdk/make'
make[1]: *** [BuildJdk.gmk:101: images] Error 2
make[1]: Leaving directory '/cygdrive/c/HUDSON/workspace/parfait_JDK8u-cpu_windows/jdk8u141/jdk/make'
make: *** [/cygdrive/c/HUDSON/workspace/parfait_JDK8u-cpu_windows/jdk8u141//make/Main.gmk:136: images-only] Error 2
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There is another issue with Error 2
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/cygdrive/c/HUDSON/workspace/parfait_JDK8u-cpu_windows/jdk8u141/build/windows-x86-normal-server-release/images/lib/_the.rt.jar.contents.tmp
/usr/bin/grep -v -e '\.class$' \
    -e '/_the\.*' -e '^_the\.*' -e '\\_the\.*' -e 'javac_state' \
    /cygdrive/c/HUDSON/workspace/parfait_JDK8u-cpu_windows/jdk8u141/build/windows-x86-normal-server-release/images/lib/_the.jars.contents > /cygdrive/c/HUDSON/workspace/parfait_JDK8u-cpu_windows/jdk8u141/build/windows-x86-normal-server-release/images/lib/_the.resources.jar.contents.tmp
make[2]: *** [CreateJars.gmk:268: /cygdrive/c/HUDSON/workspace/parfait_JDK8u-cpu_windows/jdk8u141/build/windows-x86-normal-server-release/images/lib/_the.rt.jar.contents] Error 1
make[2]: *** Waiting for unfinished jobs..
############################

The cygwin version information:
$ cygcheck -c cygwin
Cygwin Package Information
Package Version Status
cygwin 2.8.0-1 OK