Module Reader.Expert
val read_one : [< Async_unix__Log.Output.Format.machine_readable ] -> Async_unix.Reader.t -> Async_unix__Log.Message.t Async_unix.Reader.Read_result.t Async_unix__.Import.Deferred.t
read_one format reader
reads a single log message from the reader, advancing the position of the reader to the next log entry.