tweak debug logs

internal/archiver/tree_saver.go

@@ -105,14 +105,15 @@ func (s *TreeSaver) save(ctx context.Context, job *saveTreeJob) (*restic.Node, I
 			continue
 		}
 
-		debug.Log("insert %v", fnr.node.Name)
 		err := builder.AddNode(fnr.node)
 		if err != nil && errors.Is(err, restic.ErrTreeNotOrdered) && lastNode != nil && fnr.node.Equals(*lastNode) {
+			debug.Log("insert %v failed: %v", fnr.node.Name, err)
 			// ignore error if an _identical_ node already exists, but nevertheless issue a warning
 			_ = s.errFn(fnr.target, err)
 			err = nil
 		}
 		if err != nil {
+			debug.Log("insert %v failed: %v", fnr.node.Name, err)
 			return nil, stats, err
 		}
 		lastNode = fnr.node

internal/restic/parallel.go

@@ -41,7 +41,7 @@ func ParallelList(ctx context.Context, r Lister, t FileType, parallelism uint, f
 	// a worker receives an index ID from ch, loads the index, and sends it to indexCh
 	worker := func() error {
 		for fi := range ch {
-			debug.Log("worker got file %v", fi.ID.Str())
+			debug.Log("worker got file %v/%v", t, fi.ID.Str())
 			err := fn(ctx, fi.ID, fi.Size)
 			if err != nil {
 				return err

internal/walker/rewriter.go

@@ -37,7 +37,7 @@ func FilterTree(ctx context.Context, repo BlobLoadSaver, nodepath string, nodeID
 		return restic.ID{}, err
 	}
 	if nodeID != testID {
-		return restic.ID{}, fmt.Errorf("cannot encode tree at %q without loosing information", nodepath)
+		return restic.ID{}, fmt.Errorf("cannot encode tree at %q without losing information", nodepath)
 	}
 
 	debug.Log("filterTree: %s, nodeId: %s\n", nodepath, nodeID.Str())