--- a/hgext3rd/evolve/stablerangecache.py	Fri Sep 07 00:06:00 2018 -0400
+++ b/hgext3rd/evolve/stablerangecache.py	Thu Sep 06 23:24:26 2018 -0400
@@ -94,6 +94,7 @@
                     progress_new = time.time()
                     if not warned_long and LONG_WARNING_TIME < (progress_new - initial_time):
                         repo.ui.warn(LONG_MESSAGE)
+                        warned_long = True
                     if (1 < progress_each) and (0.1 < progress_new - progress_last):
                         progress_each /= 10
                     ui.progress(_("filling stablerange cache"), seen,