Not enough space for Windows builds on shared runners
An example of a message printed because of this: https://gitlab.com/OpenMW/openmw/-/jobs/3937928786#L1783
C:\GitLab-Runner\builds\OpenMW\openmw\MSVC2019_64\deps\Boost\boost/filesystem/operations.hpp(618,1): fatal error C1088: Cannot flush compiler intermediate file: 'C:/GitLab-Runner/builds/OpenMW/openmw/MSVC2019_64/apps/wizard/openmw-wizard.dir/RelWithDebInfo/cmake_pch.pch': No space left on device [C:\GitLab-Runner\builds\OpenMW\openmw\MSVC2019_64\apps\wizard\openmw-wizard.vcxproj]