Mercurial toxic spill

Can anyone tell me why I get this from Mercurial:

 chg identify --header --cwd /tmp --insecure --noninteractive --rev 0 https://dvcs.w3.org/hg/rdf/file/default
MercurialOutput:
abort: HTTP Error 404: Not Found

when my browser can find https://dvcs.w3.org/hg/rdf/file/default without any problem? And in fact, when Mercurial found it without any problem, until about lunchtime on Monday. 

Until I find out, this editor is unable to cooperate with the W3C process. 

Pat

------------------------------------------------------------
IHMC                                     (850)434 8903 or (650)494 3973   
40 South Alcaniz St.           (850)202 4416   office
Pensacola                            (850)202 4440   fax
FL 32502                              (850)291 0667   mobile
phayesAT-SIGNihmc.us       http://www.ihmc.us/users/phayes

Received on Tuesday, 12 February 2013 03:44:53 UTC