3052: capture stdout to log in crunch-dispatch
3052: Rename variable "std" to "stream"
3052: Style tweak, iterate over j[:buf] to read streams
3052: Change ruby style ruby style {:stderr => ''} to json style {stderr: ''}
Merge branch 'master' into 3052-crunch-log-stdout
Merge branch '3052-crunch-log-stdout' closes #3052