Error(s) in re-building vignettes:
  ...
--- re-building ‘cleanr_Introduction.Rasciidoc’ using rasciidoc
Warning in run_knit(file_name, knit = knit, envir = envir, write_to_disk = write_to_disk) :
  Setting option knit to TRUE based on the file contents!


processing file: /home/ripley/R/packages/tests32/cleanr.Rcheck/vign_test/cleanr/vignettes/cleanr_Introduction.Rasciidoc
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output file: /home/ripley/R/packages/tests32/cleanr.Rcheck/vign_test/cleanr/vignettes/cleanr_Introduction.asciidoc

Can't find program `source-highlight`. Please install first (http://www.gnu.org/software/src-highlite/).
asciidoc: FAILED: configuration file asciidoc.conf missing
Error: processing vignette 'cleanr_Introduction.Rasciidoc' failed with diagnostics:
Failed to locate ‘weave’ output file ‘cleanr_Introduction.pdf’ or ‘cleanr_Introduction.html’ for vignette with name ‘cleanr_Introduction’ and engine ‘rasciidoc::rasciidoc’. The following files exist in working directory ‘/home/ripley/R/packages/tests32/cleanr.Rcheck/vign_test/cleanr/vignettes’: ‘biblio.bib’ (932 bytes), ‘cleanr_Introduction.Rasciidoc’ (6481 bytes), ‘cleanr_Introduction.asciidoc’ (10220 bytes)
--- failed re-building ‘cleanr_Introduction.Rasciidoc’

SUMMARY: processing the following file failed:
  ‘cleanr_Introduction.Rasciidoc’

Error: Vignette re-building failed.
Execution halted