am-deb7-64 (HEAD), build 121, Failure

[Builder]

am-deb7-64 (HEAD), build 121

Build failed
Details: http://darcs.haskell.org/ghcBuilder/builders/am-deb7-64/121.html

git clone | Failure: Just (ExitFailure 128)

Build failed
Details: http://darcs.haskell.org/ghcBuilder/builders/am-deb7-64/121.html

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Cloning into 'build'...
error: Couldn't resolve host 'darcs.haskell.org' while accessing http://darcs.haskell.org/ghc.git/info/refs
fatal: HTTP request failed