The log format is the same as the request log format, except:
- fields that are specific to HTTP requests have been removed
- the task's params are included at the end of the log line.
These log lines are emitted:
- when the task function finishes — both completion and failure (and I
suppose it is possible for a task to become schedulable again?)
- every 5 minutes whilst it is running
Closes#17217.
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Signed-off-by: Olivier 'reivilibre <oliverw@matrix.org>
