[Rd] R-devel internal errors during check produce?

[Jan Gorecki]

So the unique.default is from the R tools package during checks.
I don't see those issues on CRAN checks.
Exact environment where I am reproducing this issue is a fresh ubuntu,
no R packages pre-installed
docker pull registry.gitlab.com/jangorecki/dockerfiles/r-devel
https://gitlab.com/jangorecki/dockerfiles/-/raw/master/r-devel/Dockerfile

On Sat, Jun 27, 2020 at 12:37 AM Jan Gorecki <j.gorecki using wit.edu.pl> wrote:
>
> Hi R developers,
>
> On R-devel (2020-06-24 r78746) I am getting those two new exceptions
> during R check. I found a change which eventually may be related
> https://github.com/wch/r-source/commit/69de92b9fb1b7f2a7c8d1394b8d56050881a5465
> I think this may be a regression. I grep'ed package manuals and R code
> for unique.default but don't see any. Usage section of the unique
> method looks fine as well. Errors look a little bit like internal
> errors.
>
> * checking Rd \usage sections ... NOTE
>  Error in unique.default(env_list) :
>    LENGTH or similar applied to environment object
>  Calls: <Anonymous> ... .get_S3_generics_as_seen_from_package ->
> unique -> unique.default
>  Execution halted
>  The \usage entries for S3 methods should use the \method markup and not
>  their full name.
>  * checking S3 generic/method consistency ... WARNING
>  Error in unique.default(env_list) :
>    LENGTH or similar applied to environment object
>  Calls: <Anonymous> ... .get_S3_generics_as_seen_from_package ->
> unique -> unique.default
>
> I don't think if it is related but I build R-devel with extra args:
> --with-recommended-packages --enable-strict-barrier --disable-long-double
> I check with:
> --as-cran --no-manual
> To reproduce download current data.table from CRAN (1.12.8) and run R check
>
> Best regards,
> Jan Gorecki