diff -r 3d60a22e27f5 -r cf69df7ea385 mercurial/hgweb/request.py
--- a/mercurial/hgweb/request.py	Sat Mar 10 12:36:36 2018 -0800
+++ b/mercurial/hgweb/request.py	Sat Mar 10 12:31:11 2018 -0800
@@ -426,7 +426,6 @@
         self.run_once = wsgienv[r'wsgi.run_once']
         self.env = wsgienv
         self.req = parserequestfromenv(wsgienv, inp)
-        self.form = self.req.qsparams.asdictoflists()
         self.res = wsgiresponse(self.req, start_response)
         self._start_response = start_response
         self.server_write = None