Debug uses fmt.Sprint to construct and log a message.

Debugf uses fmt.Sprintf to log a templated message.

Error uses fmt.Sprint to construct and log a message.

Errorf uses fmt.Sprintf to log a templated message.

Fatal uses fmt.Sprint to construct and log a message, then calls os.Exit.

Fatalf uses fmt.Sprintf to log a templated message.

Info uses fmt.Sprint to construct and log a message.

Infof uses fmt.Sprintf to log a templated message.

Panic uses fmt.Sprint to construct and log a message, then panics.

Warn uses fmt.Sprint to construct and log a message.

Warnf uses fmt.Sprintf to log a templated message.