The latest version of rlang on CRAN right now is 0.2.1, so I suspect that your campus RStudio Server may be using its own local repository (or has some other setup that is keeping it from seeing the newer rlang). I think that means you need to talk to your university IT people.
In case it helps when you are talking to them: that version of rlang is quite out of date, and since rlang is an infrastructure package whose tools are being adopted throughout the extremely popular tidyverse collection of packages, having an old rlang is likely to break many other things (as you found out!).
Since this seems not to be an IDE problem, I'm going to recategorize/re-tag the question (you can do this too, if you don't like my choices! FAQ: How Do I Change Categories, Tags, and Title?)