ccache is not working in OSX 10.8 CI nodes

While running macx-clang_developer-build_OSX_10.8 stage with Qt5 Integration project, the stage constantly fails while creating testplan. This is due cmake detecting tools. It finds cc from /Users/qt/bin dir, but the found tool is broken. See for example:
http://testresults.qt-project.org/ci/Qt5_dev_Integration/build_00149/macx-clang_developer-build_OSX_10.8/log.txt.gz

– Check for working C compiler: /Users/qt/bin/cc
– Check for working C compiler: /Users/qt/bin/cc – broken
CMake Error at /opt/local/share/cmake-2.8/Modules/CMakeTestCCompiler.cmake:61 (message):
The C compiler "/Users/qt/bin/cc" is not able to compile a simple test
program.

...

ccache: FATAL: distcc: No such file or directory

make[6]: *** [CMakeFiles/cmTryCompileExec914615636.dir/testCCompiler.c.o]
Error 1