diff -r 56d4f88530fc -r a4d62ff9a86d mercurial/obsolete.py
--- a/mercurial/obsolete.py	Fri Oct 05 16:06:51 2018 -0700
+++ b/mercurial/obsolete.py	Fri Oct 05 01:55:51 2018 +0300
@@ -278,7 +278,7 @@
     d = {}
     for l in data.split('\0'):
         if l:
-            key, value = l.split(':')
+            key, value = l.split(':', 1)
             d[key] = value
     return d