Minimalistic varnish does not compile.

[dE]

Hello,
I got this minimal VCL --

|vcl 4.0;||
||backend neuro {||
||.host = "129.170.30.193";||
||.port = "http";||
||}||
||
||sub vcl_recv {||
||set req.backend_hint = neuro;||
||}|

Which fails to compile for no reason.

|Running VCC-compiler failed, exited with 2||
||
||VCL compilation failed|

Can anyone help?
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