[R-pkg-devel] win-builder 3.4.4 build failure

[Tyler]

 I uploaded a package to win-builder to run a CHECK and it seems to be
having some issues with the oldrelease build failing due to some
interaction with the `stringi` package. Not sure exactly what's causing the
issue, but I also recently found the same namespace errors on a recent
oldrelease CHECK of ggplot2:

My check:
https://win-builder.r-project.org/3jEiPwibmtvi/00install.out

ggplot2 recent example:
https://www.r-project.org/nosvn/R.check/r-oldrel-windows-ix86+x86_64/ggplot2-00check.html

Any idea what the issue is?
Tyler

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