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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 recountWorkflow
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* checking for file ‘recountWorkflow/DESCRIPTION’ ... OK
* preparing ‘recountWorkflow’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘recount-workflow.Rmd’ using rmarkdown
trying URL 'http://duffel.rail.bio/recount/v2/SRP045638/rse_gene.Rdata'
trying URL 'http://duffel.rail.bio/recount/v2/SRP045638/rse_gene.Rdata'
trying URL 'http://duffel.rail.bio/recount/v2/SRP045638/rse_gene.Rdata'

Quitting from lines 255-270 [download gene] (recount-workflow.Rmd)
Error: processing vignette 'recount-workflow.Rmd' failed with diagnostics:
'download_retry()' failed:
  URL: http://duffel.rail.bio/recount/v2/SRP045638/rse_gene.Rdata
  error: cannot open URL 'http://duffel.rail.bio/recount/v2/SRP045638/rse_gene.Rdata'
--- failed re-building ‘recount-workflow.Rmd’

SUMMARY: processing the following file failed:
  ‘recount-workflow.Rmd’

Error: Vignette re-building failed.
Execution halted