.

wcfs/δbtail_test.go

@@ -330,7 +330,12 @@ func xverifyΔBTail1(t *testing.T, db *zodb.DB, treeRoot zodb.Oid, at1,at2 zodb.
 	}
 
 	if badv != nil {
-		emsg := fmt.Sprintf("δT is wrong:\n\nd12: %v\nδT:  %v\n\n", d12, δT)
+		emsg := "δT is wrong:\n\n"
+		tracked := initialTrackedKeys.Elements()
+		sort.Slice(tracked, func(i,j int) bool {
+			return tracked[i] < tracked[j]
+		})
+		emsg += fmt.Sprintf("d12:  %v\nδT:   %v\ntracked: %v\n\n", d12, δT, tracked)
 		emsg += strings.Join(badv, "\n")
 		t.Fatal(emsg)
 	}