jenkinsci/jclouds-plugin — pull request #72 by kei-yamazaki (2014-09-17 08:20:42+00:00)
Title: [JENKINS-15820] Avoid deadlocks by using RentrantLock#tryLock() instead of synchronized

It's fix [JENKINS-15820](https://issues.jenkins-ci.org/browse/JENKINS-15820).