async Task TryStartQueue <T>(IEnumerable <T> items, Action <T> act, int maxThreads)
{
try {
await items.SimpleQueue(maxThreads, act).ConfigureAwait(false);
} catch (AggregateException e) {
this.Logger().FormattedErrorException(e);
var f = e.Flatten();
throw f.InnerExceptions.First();
} finally {
_statusRepo.Finish();
}
}