[CMake] Sporadic "CMake Error: Unable to open check cache file for write."

[Nils Gladitz]

I've started submitting nightly Dashboards for CMake and notice sporadic "CMake Error: Unable to open check cache file for write." errors when running the tests.
For example:
	CMake Error: Unable to open check cache file for write. C:/Users/ngladitz/Dashboards/My Tests/CMake-build/Tests/DoubleProject/CMakeFiles/CMakeTmp/CMakeFiles/cmake.check_cache

This seems to happen for a handful of different tests in every one of my submissions (the above was e.g. CMakeDoubleProject).

Has anyone else seen anything like it or might know what might cause this?

Nils

-- 
Nils Gladitz, B.Sc.
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