mercurial hg-git cannot push to github

[Uwe Brauer]

>>> "PJ" == Paul Jackson <pj at usa.net> writes:

Hi

   > $  hg push git+ssh://git@github.com/ThePythonicCow/rawscan.git
   > pushing to git+ssh://git@github.com/ThePythonicCow/rawscan.git
   > Unable to negotiate with 192.30.253.112 port 22: no matching key
   > exchange method found. Their offer:
   > curve25519-sha256,curve25519-sha256 at libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256 
   > abort: git remote error: The remote server unexpectedly closed the connection.


I occasionally push to github using the hg-git plugin, I set manually in
my 
 .hg/hgrc 

File 

github = git at github.com:matlab-mode/mirror.git

And I have set up a ssh key in github.

I can push and pull.

Uwe Brauer
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