concourse_darwin_task_output_failure

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{"timestamp":"1533139104.438421249","source":"worker","message":"worker.garden.garden-server.attach.failed","log_level":2,"data":{"error":"unknown process: task","handle":"b1f3a1a8-283e-4aad-774f-e179887eea42","session":"2.1.95"}}
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{"timestamp":"1533139144.096146107","source":"baggageclaim","message":"baggageclaim.api.volume-server.destroy-volumes.destroyed","log_level":1,"data":{"session":"2.1.205"}}
{"timestamp":"1533139144.096271038","source":"worker","message":"worker.command-to-run","log_level":1,"data":{"cmd":"report-volumes"}}
{"timestamp":"1533139169.945859909","source":"worker","message":"worker.garden.garden-server.run.exited","log_level":1,"data":{"handle":"b1f3a1a8-283e-4aad-774f-e179887eea42","id":"task","session":"2.1.96","status":0}}
{"timestamp":"1533139173.398075819","source":"tsa","message":"tsa.connection.channel.forward-worker.heartbeat.start","log_level":1,"data":{"remote":"172.23.0.1:39802","session":"10.1.1.38","worker-address":"127.0.0.1:32951","worker-platform":"darwin","worker-tags":""}}
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{"timestamp":"1533139174.150870323","source":"baggageclaim","message":"baggageclaim.api.volume-server.destroy-volumes.waiting-for-volumes-to-be-destroyed","log_level":1,"data":{"session":"2.1.209"}}
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