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### Running command:
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###   /Library/Frameworks/R.framework/Resources/bin/R CMD build --keep-empty-dirs --no-resave-data scuttle
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* checking for file ‘scuttle/DESCRIPTION’ ... OK
* preparing ‘scuttle’:
* checking DESCRIPTION meta-information ... OK
* cleaning src
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘misc.Rmd’ using rmarkdown
--- finished re-building ‘misc.Rmd’

--- re-building ‘norm.Rmd’ using rmarkdown
Warning: call dbDisconnect() when finished working with a connection

Quitting from lines 98-103 [unnamed-chunk-9] (norm.Rmd)
Error: processing vignette 'norm.Rmd' failed with diagnostics:
function 'as_cholmod_sparse' not provided by package 'Matrix'
--- failed re-building ‘norm.Rmd’

--- re-building ‘qc.Rmd’ using rmarkdown
--- finished re-building ‘qc.Rmd’

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

Error: Vignette re-building failed.
Execution halted