It seems like you are trying to install udpipe from source. This is likely to crash. Building packages from source can consume more resources than are available with say the "Free" plan of rstudio.cloud.
Installing abresler/realtR using the binaries from RSPM (default repo setting of rstudio.cloud) works like a charm. Only package built from source is the realtR package in this case.
Thanks! I don't know why, but my project above was somehow preferentially installing packages from source, even though I was using the line devtools::install_github("abresler/realtR")
I started a fresh empty project, and now the devtools install from github appropriately uses RPSM binaries.