I've just ended up here with a similar issue. Not sure if it's the same problem that the OP had or a new one but I thought it might be helpful to record it here anyway. My issue was related to this: https://github.com/rstudio/rstudio/issues/16454

Running Sys.unsetenv("PKG_CPPFLAGS") and then installing rbibutils worked fine. Ubuntu 24.04.3 & RStudio 2025.09.2