unit-spark-1: 2016-03-31 18:23:10 ERROR juju.worker.dependency engine.go:509 "uniter" manifold worker returned unexpected error: preparing operation "install local:trusty/apache-spark-1": failed to download charm "local:trusty/apache-spark-1" from ["https://172.31.35.239:17070/model/961d04ce-f2e0-4197-88ea-5cfa12439e47/charms?file=%2A&url=local%3Atrusty%2Fapache-spark-1"]: expected sha256 "c88671724b0181d35a1f71d52b9d4ed0e7d88fa2e986f5632c67d36e9eb66b9b", got "1130f59506ef70c96b2af3dcb8793b41d117bf95cd8e0511c652b2f074416bf8"
unit-spark-1: 2016-03-31 18:23:12 ERROR juju.worker.dependency engine.go:509 "metric-collect" manifold worker returned unexpected error: failed to read charm from: /var/lib/juju/agents/unit-spark-1/charm: stat /var/lib/juju/agents/unit-spark-1/charm: no such file or directory