@OutputDirectory issue

### Using Gradle 2.13-rc-1
➜  regression (master) ✗ sdk use gradle 2.12

Using gradle version 2.12 in this shell.
➜  regression (master) rm -r .gradle && gradle clean checkCreated && gradle clean checkCreated
:clean
:createEmpty
did nothing: output dir is created automatically
:checkCreated
Directory 'build/createdDirectory' exists

BUILD SUCCESSFUL

Total time: 2.123 secs

This build could be faster, please consider using the Gradle Daemon: https://docs.gradle.org/2.12/userguide/gradle_daemon.html
:clean
:createEmpty
did nothing: output dir is created automatically
:checkCreated
Directory 'build/createdDirectory' exists

BUILD SUCCESSFUL

Total time: 1.699 secs

This build could be faster, please consider using the Gradle Daemon: https://docs.gradle.org/2.12/userguide/gradle_daemon.html

### Using Gradle 2.13-rc-1
➜  regression (master) sdk use gradle 2.13-rc-1                                               

Using gradle version 2.13-rc-1 in this shell.
➜  regression (master) rm -r .gradle && gradle clean checkCreated && gradle clean checkCreated
:clean
:createEmpty
did nothing: output dir is created automatically
:checkCreated
Directory 'build/createdDirectory' exists

BUILD SUCCESSFUL

Total time: 2.081 secs

This build could be faster, please consider using the Gradle Daemon: https://docs.gradle.org/2.13-rc-1/userguide/gradle_daemon.html
:clean
:createEmpty UP-TO-DATE
:checkCreated FAILED

FAILURE: Build failed with an exception.

* Where:
Build file '/Users/daz/dev/gradle/playground/regression/build.gradle' line: 6

* What went wrong:
Execution failed for task ':checkCreated'.
> assert file('build/createdDirectory').exists()
         |                              |
         |                              false
         /Users/daz/dev/gradle/playground/regression/build/createdDirectory

* 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: 1.653 secs