--- a/hgext3rd/evolve/__init__.py	Thu Jul 11 16:24:13 2019 -0700
+++ b/hgext3rd/evolve/__init__.py	Thu Jul 11 22:23:32 2019 -0700
@@ -1174,15 +1174,15 @@
                   % ui.label(str(repo['.']), 'evolve.node'))
     return 0
 
-def _updatetonext(ui, repo, children, displayer, opts):
+def _updatetonext(ui, repo, child, displayer, opts):
     """ logic for `hg next` command to update to children and move bookmarks if
     required """
     bm = repo._activebookmark
     shouldmove = opts.get('move_bookmark') and bm is not None
     if opts.get('dry_run'):
-        ui.write(_('hg update %s;\n') % children)
+        ui.write(_('hg update %s;\n') % child)
         if shouldmove:
-            ui.write(_('hg bookmark %s -r %s;\n') % (bm, children))
+            ui.write(_('hg bookmark %s -r %s;\n') % (bm, child))
     else:
         updatecheck = None
         # --merge is passed, we don't need to care about commands.update.check
@@ -1190,7 +1190,7 @@
         if opts['merge']:
             updatecheck = 'none'
         try:
-            ret = hg.updatetotally(ui, repo, children.node(), None,
+            ret = hg.updatetotally(ui, repo, child.node(), None,
                                    updatecheck=updatecheck)
         except error.Abort as exc:
             # replace the hint to mention about --merge option
@@ -1203,7 +1203,7 @@
                 lock = repo.lock()
                 tr = repo.transaction('next')
                 if shouldmove:
-                    bmchanges = [(bm, children.node())]
+                    bmchanges = [(bm, child.node())]
                     repo._bookmarks.applychanges(repo, tr, bmchanges)
                 else:
                     bookmarksmod.deactivate(repo)
@@ -1211,7 +1211,7 @@
             finally:
                 lockmod.release(tr, lock)
     if not ui.quiet:
-        displayer.show(children)
+        displayer.show(child)
     return 0
 
 @eh.wrapcommand('commit')