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### Running command:
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###   /home/biocbuild/bbs-3.18-bioc/R/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'
Content type 'binary/octet-stream' length 12604886 bytes (12.0 MB)
==================================================
downloaded 12.0 MB

trying URL 'https://github.com/leekgroup/recount-website/blob/master/predictions/PredictedPhenotypes_v0.0.06.rda?raw=true'
Content type 'application/octet-stream' length 548129 bytes (535 KB)
==================================================
downloaded 535 KB

[WARNING] This document format requires a nonempty <title> element.
  Please specify either 'title' or 'pagetitle' in the metadata,
  e.g. by using --metadata pagetitle="..." on the command line.
  Falling back to 'gene_report.knit'
trying URL 'http://duffel.rail.bio/recount/v2/SRP045638/rse_exon.Rdata'
Content type 'binary/octet-stream' length 110177449 bytes (105.1 MB)
==================================================
downloaded 105.1 MB

BIO_do_connect() failed
SSL error: unexpected eof while reading
R: getaddrinfo() error on hostName=duffel.rail.bio: System error
: Too many open files
R: getaddrinfo() error on hostName=duffel.rail.bio: System error
: Too many open files
Warning in file(con, "w") :
  cannot open file 'recount-workflow.knit.md': Too many open files
Error: processing vignette 'recount-workflow.Rmd' failed with diagnostics:
cannot open the connection
Error: tangling vignette 'recount-workflow.Rmd' failed with diagnostics:
cannot open file '/home/biocbuild/bbs-3.18-bioc/R/site-library/lubridate/R/lubridate.rdb': Too many open files
--- failed re-building ‘recount-workflow.Rmd’

Warning in `>.POSIXt`(mt.x, mt.y) :
  restarting interrupted promise evaluation
Error in `>.POSIXt`(mt.x, mt.y) : 
  cannot open file '/home/biocbuild/bbs-3.18-bioc/R/site-library/lubridate/R/lubridate.rdb': Too many open files
Calls: <Anonymous> -> file_test -> >.POSIXt
Execution halted