D4258: debugcommands: urlerror only has a read() method in Python 2

[durin42 (Augie Fackler)]

durin42 created this revision.
Herald added a subscriber: mercurial-devel.
Herald added a reviewer: hg-reviewers.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D4258

AFFECTED FILES
  mercurial/debugcommands.py

CHANGE DETAILS

diff --git a/mercurial/debugcommands.py b/mercurial/debugcommands.py
--- a/mercurial/debugcommands.py
+++ b/mercurial/debugcommands.py
@@ -3207,7 +3207,8 @@
                 res = opener.open(req)
                 body = res.read()
             except util.urlerr.urlerror as e:
-                e.read()
+                # read() method must be called, but only exists in Python 2
+                getattr(e, 'read', lambda: None)()
                 continue
 
             if res.headers.get('Content-Type') == 'application/mercurial-cbor':



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