The RosBE configuration step that calls SVN crashes in ReactOS

I have tried to compile React OS under itself (a test that I think we should do on regular basis, according to the "Eating your own dog food" principle....

The configuration step failed with a strange message when cmake tries to detect svn as shown in my screenshot.

As you can see in my second screenshot, the problem occurs when FindSubversion is invoked at line 57 of sdk/include/reactos/version.cmake

However, in the very same virtual machine, svn info works from the command line as my 3rd screenshot.

I'am using React OS Build Environment 2.1.3 at r71797