[Bug 5230] Unicorn appends the output parameter twice for each observation

http://www.w3.org/Bugs/Public/show_bug.cgi?id=5230

           Summary: Unicorn appends the output parameter twice for each
                    observation
           Product: Unicorn
           Version: unspecified
          Platform: PC
               URL: http://qa-
                    dev.w3.org/unicorn/observe?ucn_task=conformance&ucn_uri=
                    http%3A%2F%2Fwww.w3.org
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Core
        AssignedTo: dave.null@w3.org
        ReportedBy: jean-gui@w3.org
         QAContact: www-validator-cvs@w3.org


The above URL produces the following line in the log (amongst other related
ones):
[[
2007/10/26 14:45:50 DEBUG (UnicornCall.java:161) Framework : RequestList :
HIGH:{markup-validator=url:http://qa-dev.w3.org/wmvs/HEAD/check
param:url=http%3A%2F%2Fwww.w3.org&output=ucn&output=ucn}
MEDIUM:{appc-checker=url:http://qa-dev.w3.org/appc/
param:uri=http%3A%2F%2Fwww.w3.org&output=xml&output=xml}
LOW:{css-validator=url:http://jigsaw.w3.org/css-validator/validator
param:uri=http%3A%2F%2Fwww.w3.org&output=ucn&output=ucn&warning=0}.
]]
Somehow, the parameter "output" is appended twice.