Lots of people are seeing this:

:apps:experiments:3DViewer:compileJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':apps:experiments:3DViewer:compileJava'.
 > java.lang.ClassFormatError: Invalid Constant Pool entry Type 18

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or
--debug option to get more log output.

BUILD FAILED

Total time: 39.292 secs
assaf@assaf-Latitude-E6410:~/ws/udev-refactoring/rt$ java -versionjava
version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b113)
Java HotSpot(TM) Server VM (build 25.0-b55, mixed mode)

The problem is fixed by moving to Gradle 1.8 or setting the build flag -PUSE_DEPEND=false.