I am the maintainer of the package OpenStats and keep getting emails about the failure to build the package in some environments. The issue seems to be related to the .Rmd guide, however, I really cannot reproduce the error on my side and this is really puzzling me. Could it be a false error?

https://master.bioconductor.org/checkResults/3.15/bioc-LATEST/OpenStats/nebbiolo1-buildsrc.html

From the link above:

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### Running command:
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###   /home/biocbuild/bbs-3.15-bioc/R/bin/R CMD build --keep-empty-dirs --no-resave-data OpenStats
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* checking for file ‘OpenStats/DESCRIPTION’ ... OK
* preparing ‘OpenStats’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘OpenStats.Rmd’ using rmarkdown
Quitting from lines 255-284 (OpenStats.Rmd) 
Error: processing vignette 'OpenStats.Rmd' failed with diagnostics:
length(class2) == 1L is not TRUE
--- failed re-building ‘OpenStats.Rmd’

SUMMARY: processing the following file failed:
  ‘OpenStats.Rmd’

Error: Vignette re-building failed.
Execution halted

Hi Hamedhm,

Have you tried this on R devel? I get the same error.

The offending code is in:

https://code.bioconductor.org/browse/OpenStats/blob/master/R/Auxi.R#L57

and in other places.

It should probably be separated into two tests (one for each class).

Best regards,

Marcel