Hello,
I'm not entirely sure but I think that Deleting TestModule directories in m_reinstall.sh should only be done in case of git as checkout source
In case ofcheckout_source_from: "composer" for example themagento2ce/app/code/Magento directory doesn't exist, because it's found in vendor directory. In this case I'm not sure it's useful to delete the TestModule directory anyway (?)
Thanks

magento_app_code_dir="${vagrant_dir}/magento2ce/app/code/Magento"mkdir -p "$magento_app_code_dir"cd "${magento_app_code_dir}"status "Deleting TestModule directories"ls | grep "TestModule" | xargs rm -rf