[#GRADLE-3068] Can't call evaluate() on Project instances returned from ProjectBuilder with gradle-1.12-rc-1

[Example project that demonstrates the issue]([1]https://github.com/stormbeta/gradle-r...)

Calling evaluate() on Project instances built using ProjectBuilder causes a NoClassDefFound exception inside Gradle:

java.lang.NoClassDefFoundError: org/gradle/tooling/internal/impl/DefaultGradleProject
at org.gradle.plugins.ide.internal.tooling.ToolingRegistrationAction.execute(ToolingRegistrationAction.java:29)
at org.gradle.plugins.ide.internal.tooling.ToolingRegistrationAction.execute(ToolingRegistrationAction.java:24)
at org.gradle.configuration.project.PluginsProjectConfigureActions.execute(PluginsProjectConfigureActions.java:31)
at org.gradle.configuration.project.PluginsProjectConfigureActions.execute(PluginsProjectConfigureActions.java:22)
at org.gradle.configuration.project.ConfigureActionsProjectEvaluator.evaluate(ConfigureActionsProjectEvaluator.java:34)
at org.gradle.configuration.project.LifecycleProjectEvaluator.evaluate(LifecycleProjectEvaluator.java:55)
at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:493)
at org.gradle.api.internal.project.AbstractProject.evaluate(AbstractProject.java:80)
at BreakingTest.can evaluate ProjectBuilder(BreakingTest.groovy:15)
Caused by: java.lang.ClassNotFoundException: org.gradle.tooling.internal.impl.DefaultGradleProject
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 9 more

If I switch back to gradle-1.11 there's no issue.
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[1] https://github.com/stormbeta/gradle-regression

[GRADLE-3068] Can't call evaluate() on Project instances returned from ProjectBuilder with gradle-1.12-rc-1 Created: 17/Apr/14 Updated: 21/Apr/14 Resolved: 17/Apr/14
Status:	Resolved
Project:	Gradle
Affects Version/s:	None
Fix Version/s:	1.12-rc-2

[GRADLE-3068] Can't call evaluate() on Project instances returned from ProjectBuilder with gradle-1.12-rc-1 Created: 17/Apr/14 Updated: 21/Apr/14 Resolved: 17/Apr/14