I want to get the results of the fly watch command for the current build on the on_error hook so I can report the details of the error into Slack.
I found a way to do this using a custom resource, however, since the job is still running during the on_error, it just loops endlessly which effectively hangs the concourse build and VM.
Is there a way to get the fly watch output for a pipeline? Alternatively, is there a way to tell the fly watch command to just return the data is has and not continue to query for more output?