问Gradle不能运行，java.lang.NoClassDefFoundError: groovy/lang/GroovyObject

EN

$ gradle -v

FAILURE: Build aborted because of an internal error.

* What went wrong:
Build aborted because of an unexpected internal error. Please file an issue at: http://www.gradle.org.

* Try:
Run with --debug option to get additional debug info.

* Exception is:
java.lang.NoClassDefFoundError: groovy/lang/GroovySystem
    at org.gradle.util.GradleVersion.prettyPrint(GradleVersion.java:183)
    at org.gradle.launcher.CommandLineActionFactory$ShowVersionAction.run(CommandLineActionFactory.java:181)
    at org.gradle.launcher.CommandLineActionFactory$ActionAdapter.execute(CommandLineActionFactory.java:199)
    at org.gradle.launcher.CommandLineActionFactory$ActionAdapter.execute(CommandLineActionFactory.java:191)
(stacktrace snipped)
at org.gradle.launcher.ProcessBootstrap.run(ProcessBootstrap.java:28)
at org.gradle.launcher.GradleMain.main(GradleMain.java:24)
Caused by: java.lang.ClassNotFoundException: groovy.lang.GroovySystem
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
    ... 17 more

$ export CLASSPATH=/usr/share/gradle/lib/groovy-all.jar && echo $CLASSPATH
/usr/share/gradle/lib/groovy-all.jar

apply plugin: 'eclipse'
apply plugin: 'groovy'

repositories {
    mavenCentral()
}

dependencies {
    groovy group: 'org.codehaus.groovy', name: 'groovy', version: '1.7.10'
    testCompile group: 'junit', name: 'junit', version: '4.8.2'
}