don't use logger

@@ -26,14 +26,12 @@ package version
 
 import (
 	"encoding/json"
-
-	"gitlab.weird-web-workers.org/golang/logger"
 )
 
 type Version struct {
-	Package string `json:"Package"`
-	Version string `json:"Version"`
-	Revision string `json:"Revision"`
+	Package   string `json:"Package"`
+	Version   string `json:"Version"`
+	Revision  string `json:"Revision"`
 	BuildTime string `json:"BuildTime"`
 }
 
@@ -47,14 +45,12 @@ func (v Version) Register() {
 	versions[v.Package] = v
 }
 
-func (vMap versionMap) Json() []byte {
+func (vMap versionMap) Json() ([]byte, error) {
 	vSlice := make([]Version, len(vMap))
 	for _, v := range vMap {
 		vSlice = append(vSlice, v)
 	}
-	vJson, err := json.Marshal(vSlice)
-	logger.Default.FailOnError(err, "Unable to marshal versions")
-	return vJson
+	return json.Marshal(vSlice)
 }
 
 // vim: ts=4 sts=4 sw=4 noet tw=72: