R CMD check found WARNINGs

Process completed with exit code 1.

Input 'save-always' has been deprecated with message: save-always does not work as intended and will be removed in a future release. A separate `actions/cache/restore` step should be used instead. See https://github.com/actions/cache/tree/main/save#always-save-cache for more details.

Found the following files with non-portable file names:

Found the following files with non-ASCII characters:

Undocumented code objects: