Switching to io.MultiWriter for clarity

entry.go

@@ -71,6 +71,8 @@ func (entry *Entry) WithFields(fields Fields) *Entry {
 }
 
 func (entry *Entry) log(level Level, msg string) {
+	var panicBuf bytes.Buffer
+
 	entry.Time = time.Now()
 	entry.Level = level
 	entry.Message = msg
@@ -88,13 +90,10 @@ func (entry *Entry) log(level Level, msg string) {
 		entry.Logger.mu.Unlock()
 	}
 
-	var panicBuf bytes.Buffer
-	teeOut := io.TeeReader(reader, &panicBuf)
-
 	entry.Logger.mu.Lock()
 	defer entry.Logger.mu.Unlock()
 
-	_, err = io.Copy(entry.Logger.Out, teeOut)
+	_, err = io.Copy(io.MultiWriter(entry.Logger.Out, &panicBuf), reader)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
 	}