diff -r f3c314020beb -r ffa3026d4196 mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Mon Mar 05 15:07:32 2018 -0500
+++ b/mercurial/debugcommands.py	Mon Mar 05 12:30:20 2018 -0500
@@ -16,6 +16,7 @@
 import random
 import socket
 import ssl
+import stat
 import string
 import subprocess
 import sys
@@ -1373,9 +1374,9 @@
             l.release()
         else:
             try:
-                stat = vfs.lstat(name)
-                age = now - stat.st_mtime
-                user = util.username(stat.st_uid)
+                st = vfs.lstat(name)
+                age = now - st[stat.ST_MTIME]
+                user = util.username(st.st_uid)
                 locker = vfs.readlock(name)
                 if ":" in locker:
                     host, pid = locker.split(':')