Fix error when technology couldn't be determined

containers/tools.go

@@ -2,7 +2,6 @@ package containers
 
 import (
 	"bytes"
-	"errors"
 	"fmt"
 	"log"
 	"os"
@@ -173,7 +172,14 @@ func getTechAndVersion(symlink string) (*TechInfo, error) {
 	re := regexp.MustCompile(`\d+\.\d+\.\d+`)
 	version := re.FindString(parts[1])
 	if version == "" {
-		return nil, errors.New("failed to extract version from symlink")
+		// In case version couldn't be determined we return "unknown", otherwise returning
+		// error in this case was crashing admin when user fucked up the symlink for the
+		// tech manually.
+		log.Println("failed to extract version from symlink")
+		return &TechInfo{
+			Tech:    "unknown",
+			Version: "",
+		}, nil
 	}
 
 	return &TechInfo{