py3: use %d to format integers into bytestrings

hgext/blackbox.py

@@ -173,7 +173,7 b' def wrapui(ui):'
                 ui._bbinlog = True
                 date = util.datestr(None, '%Y/%m/%d %H:%M:%S')
                 user = util.getuser()
-                pid = str(util.getpid())
+                pid = '%d' % util.getpid()
                 formattedmsg = msg[0] % msg[1:]
                 rev = '(unknown)'
                 changed = ''

mercurial/cmdutil.py

@@ -1361,7 +1361,7 b' class jsonchangeset(changeset_printer):'
         if rev is None:
             jrev = jnode = 'null'
         else:
-            jrev = str(rev)
+            jrev = '%d' % rev
             jnode = '"%s"' % hex(ctx.node())
         j = encoding.jsonescape
 
@@ -1608,7 +1608,7 b' def finddate(ui, repo, date):'
         if rev in results:
             ui.status(_("found revision %s from %s\n") %
                       (rev, util.datestr(results[rev])))
-            return str(rev)
+            return '%d' % rev
 
     raise error.Abort(_("revision matching date not found"))