--- a/mercurial/util.py	Tue Feb 13 18:12:26 2018 +0800
+++ b/mercurial/util.py	Fri Feb 16 13:25:39 2018 -0800
@@ -2179,7 +2179,7 @@
             try:
                 d["d"] = days
                 return parsedate(date, extendeddateformats, d)[0]
-            except Abort:
+            except error.ParseError:
                 pass
         d["d"] = "28"
         return parsedate(date, extendeddateformats, d)[0]