Problem when installing lme4 under Debian stretch

I would start with the _binary_ package you can install via

   sudo apt-get install r-cran-car

which will take care of all dependecies.

Building some of these package on small hardware can be challenging simply
due to lack of RAM --- and ditto for minimal cloud instances with small RAM
footprint.  Use binaries where you can if you hardware cannot cope.

Dirk

http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org