mantle: clean up cosa
This cleans up cosa/schema_test.go.
Fixes part of
@@ -27,7 +27,7 @@ func TestSchema(t *testing.T) {
t.Errorf("failed to read %s: %v", df, err)
}
if b == nil {
- t.Errorf("failed to render build")
+ t.Fatalf("failed to render build")
}
// Render it invalid
