* installing *source* package ‘do’ ...
** package ‘do’ successfully unpacked and MD5 sums checked
** using staged installation
** R
Error in parse(outFile) : 
  /Volumes/Builds/packages/high-sierra-x86_64/results/4.0/do.Rcheck/00_pkg_src/do/R/file.name.R:13:19: unexpected '>'
12: file.name <- function(...){
13:     fn <- c(...) |>
                      ^
ERROR: unable to collate and parse R files for package ‘do’
* removing ‘/Volumes/Builds/packages/high-sierra-x86_64/results/4.0/do.Rcheck/do’