How to build Spring Security

[Dreamsfly]

Hello everyone,
I learned Spring Securiy following the tutorail http://static.springsource.org/sprin...ite/build.html.
I download Spring Security Source using msysgit and running command "git clone git://github.com/SpringSource/spring-security.git" successfully‚But when i build Spring Security through command 'gradlew build', some errors occured as following:

00:18:14.953 [ERROR] [org.gradle.BuildExceptionReporter]
00:18:14.953 [ERROR] [org.gradle.BuildExceptionReporter] FAILURE: Build failed with an exception.
00:18:14.968 [ERROR] [org.gradle.BuildExceptionReporter]
00:18:14.968 [ERROR] [org.gradle.BuildExceptionReporter] * What went wrong:
00:18:14.968 [ERROR] [org.gradle.BuildExceptionReporter] Execution failed for task ':spring-security-core:test'.
00:18:14.984 [ERROR] [org.gradle.BuildExceptionReporter] Cause: There were failing tests. See the report at C:\Documents
and Settings\Administrator\spring-security\core\build\reports\tests.
00:18:14.984 [ERROR] [org.gradle.BuildExceptionReporter]
00:18:14.984 [ERROR] [org.gradle.BuildExceptionReporter] * Exception is:
00:18:14.984 [ERROR] [org.gradle.BuildExceptionReporter] org.gradle.api.tasks.TaskExecutionException: Execution failed f
or task ':spring-security-core:test'.
00:18:15.000 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteAct ion
sTaskExecuter.executeActions(ExecuteActionsTaskExe cuter.java:71)
00:18:15.000 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteAct ion
sTaskExecuter.execute(ExecuteActionsTaskExecuter.j ava:48)
00:18:15.000 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.PostExecut ion
AnalysisTaskExecuter.execute(PostExecutionAnalysis TaskExecuter.java:34)
00:18:15.015 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipUpToDa teT
askExecuter.execute(SkipUpToDateTaskExecuter.java: 55)
00:18:15.015 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.Validating Tas
kExecuter.execute(ValidatingTaskExecuter.java:57)
00:18:15.015 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipEmptyS our
ceFilesTaskExecuter.execute(SkipEmptySourceFilesTa skExecuter.java:41)
00:18:15.031 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipTaskWi thN
oActionsExecuter.execute(SkipTaskWithNoActionsExec uter.java:51)
00:18:15.031 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipOnlyIf Tas
kExecuter.execute(SkipOnlyIfTaskExecuter.java:52)
00:18:15.031 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteAtM ost
OnceTaskExecuter.execute(ExecuteAtMostOnceTaskExec uter.java:42)
00:18:15.031 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.AbstractTask.execute(Abstr act
Task.java:237)
00:18:15.046 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultTaskGraphExecuter.exec ute
Task(DefaultTaskGraphExecuter.java:167)
00:18:15.046 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultTaskGraphExecuter.doEx ecu
te(DefaultTaskGraphExecuter.java:160)
00:18:15.046 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultTaskGraphExecuter.exec ute
(DefaultTaskGraphExecuter.java:78)
00:18:15.062 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.TaskNameResolvingBuildExecute r.e
xecute(TaskNameResolvingBuildExecuter.java:113)
00:18:15.062 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DelegatingBuildExecuter.execu te(
DelegatingBuildExecuter.java:54)
00:18:15.062 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.do Bui
ldStages(DefaultGradleLauncher.java:158)
00:18:15.078 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.do Bui
ld(DefaultGradleLauncher.java:112)
00:18:15.078 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.ru n(D
efaultGradleLauncher.java:80)
00:18:15.078 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.RunBuildAction.execute(RunBuil dAc
tion.java:41)
00:18:15.078 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.RunBuildAction.execute(RunBuil dAc
tion.java:27)
00:18:15.093 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.ExceptionReportingAction.execu te(
ExceptionReportingAction.java:32)
00:18:15.093 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.ExceptionReportingAction.execu te(
ExceptionReportingAction.java:21)
00:18:15.093 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.CommandLineActionFactory$WithL ogg
ingAction.execute(CommandLineActionFactory.java:21 9)
00:18:15.109 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.CommandLineActionFactory$WithL ogg
ingAction.execute(CommandLineActionFactory.java:20 3)
00:18:15.109 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.Main.execute(Main.java:55)
00:18:15.109 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.Main.main(Main.java:40)
00:18:15.125 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.ProcessBootstrap.runNoExit(Pro ces
sBootstrap.java:46)
00:18:15.125 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.ProcessBootstrap.run(ProcessBo ots
trap.java:28)
00:18:15.125 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.GradleMain.main(GradleMain.jav a:2
4)
00:18:15.125 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.wrapper.BootstrapMainStarter.start(Boot str
apMainStarter.java:33)
00:18:15.140 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.wrapper.Wrapper.execute(Wrapper.java:51 )
00:18:15.140 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.wrapper.GradleWrapperMain.main(GradleWr app
erMain.java:37)
00:18:15.140 [ERROR] [org.gradle.BuildExceptionReporter] Caused by: org.gradle.api.GradleException: There were failing t
ests. See the report at C:\Documents and Settings\Administrator\spring-security\core\build\reports\tests.
00:18:15.156 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.tasks.testing.Test.executeTests(Tes t.j
ava:337)
00:18:15.156 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.BeanDynamicObject.invokeMe tho
d(BeanDynamicObject.java:158)
00:18:15.156 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.CompositeDynamicObject.inv oke
Method(CompositeDynamicObject.java:93)
00:18:15.171 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.tasks.testing.Test_Decorated.invoke Met
hod(Unknown Source)
00:18:15.171 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.util.ReflectionUtil.invoke(ReflectionUt il.
groovy:23)
00:18:15.171 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.Annota tio
nProcessingTaskFactory$2.execute(AnnotationProcess ingTaskFactory.java:129)
00:18:15.171 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.Annota tio
nProcessingTaskFactory$2.execute(AnnotationProcess ingTaskFactory.java:127)
00:18:15.187 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteAct ion
sTaskExecuter.executeActions(ExecuteActionsTaskExe cuter.java:63)
00:18:15.187 [ERROR] [org.gradle.BuildExceptionReporter] ... 31 more
00:18:15.187 [ERROR] [org.gradle.BuildExceptionReporter]
00:18:15.203 [LIFECYCLE] [org.gradle.BuildResultLogger]
00:18:15.203 [LIFECYCLE] [org.gradle.BuildResultLogger] BUILD FAILED
00:18:15.203 [LIFECYCLE] [org.gradle.BuildResultLogger]

I also had to check report in "C:\Documents and Settings\Administrator\spring-security\core\build\reports\tests" out, but nothing found.
This is my fist topics in English, please forgive any errors.
Anybody please tell me the answer,thank you very much.