try debugging Jenkins
diff --git a/bootstrap.bat b/bootstrap.bat
index 2f919b3..be2ec0b 100755
--- a/bootstrap.bat
+++ b/bootstrap.bat
@@ -53,6 +53,7 @@
 echo JAVA=%JAVA%
 echo JAVAC=%JAVAC%
 echo CLASSPATH=%CLASSPATH%
+echo ANT_HOME=%ANT_HOME%
 
 if     "%OS%" == "Windows_NT" if exist %CLASSDIR%\nul rmdir/s/q %CLASSDIR%
 if not "%OS%" == "Windows_NT" if exist %CLASSDIR%\nul deltree/y %CLASSDIR%