##############################################################################
##############################################################################
###
### Running command:
###
###   /home/biocbuild/R/R/bin/R CMD build --keep-empty-dirs --no-resave-data scDiagnostics
###
##############################################################################
##############################################################################


* checking for file ‘scDiagnostics/DESCRIPTION’ ... OK
* preparing ‘scDiagnostics’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘AnnotationAnomalies.Rmd’ using rmarkdown
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
--- finished re-building ‘AnnotationAnomalies.Rmd’

--- re-building ‘DatasetMarkerGeneAlignment.Rmd’ using rmarkdown
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Could not fetch https://raw.githubusercontent.com/ccb-hms/scDiagnostics/main/inst/extdata/compressed/DatasetMarkerGeneAlignment/comparePCASubspace.png
HttpExceptionRequest Request {
  host                 = "raw.githubusercontent.com"
  port                 = 443
  secure               = True
  requestHeaders       = []
  path                 = "/ccb-hms/scDiagnostics/main/inst/extdata/compressed/DatasetMarkerGeneAlignment/comparePCASubspace.png"
  queryString          = ""
  method               = "GET"
  proxy                = Nothing
  rawBody              = False
  redirectCount        = 10
  responseTimeout      = ResponseTimeoutDefault
  requestVersion       = HTTP/1.1
  proxySecureMode      = ProxySecureWithConnect
}
 ConnectionTimeout
Error: processing vignette 'DatasetMarkerGeneAlignment.Rmd' failed with diagnostics:
pandoc document conversion failed with error 61
--- failed re-building ‘DatasetMarkerGeneAlignment.Rmd’

--- re-building ‘VisualizationTools.Rmd’ using rmarkdown
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
--- finished re-building ‘VisualizationTools.Rmd’

--- re-building ‘scDiagnostics.Rmd’ using rmarkdown
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
Warning in hook_png(..., cmd = "pngquant", post_process = function(x) { :
  cannot find pngquant; please install and put it in PATH
--- finished re-building ‘scDiagnostics.Rmd’

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

Error: Vignette re-building failed.
Execution halted