The hot-reload feature allow the user to modify the configuration
of beamium without restarting it. To do that, we closed every runtime
started and re-create them. This could have as consequencies to
spawn a future on a closed runtime when the current task of a runtime
has not yet finished to run.
As we are creating all the stuffs (queues, router, scrapers, sinks...),
we could ignore this error, as we know the context.
Signed-off-by: Florentin Dubois florentin.dubois@hey.com