./pants clean-all
*** Using BETA channel.  Unset SQPANTS_VERSION to use the stable channel.
Running Pants version square-20160329-01
INFO] Detected git repository at /Users/zundel/Development/java on branch zundel/cake-eventstream

11:21:19 00:00 [main]
               See a report at: <http://localhost:60997/run/pants_run_2016_04_02_11_21_19_928_5cf3104e2537499d9963c0c1dc9c8be3>
11:21:19 00:00   [setup]
11:21:19 00:00     [parse]
               Executing tasks in goals: clean-allWaiting on pants process None (/usr/local/Cellar/python/2.7.10_2/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python /Users/zundel/.cache/pants/bin/pants/pants-square-20160329-01.pex clean-all  ) to complete

11:21:20 00:01   [complete]
               FAILURE
Exception caught: (<class 'lockfile.AlreadyLocked'>)

Exception message: /Users/zundel/Development/java/.pants.run is already locked