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### Running command:
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###   /home/biocbuild/bbs-3.21-bioc/R/bin/R CMD build --keep-empty-dirs --no-resave-data vtpnet
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* checking for file ‘vtpnet/DESCRIPTION’ ... OK
* preparing ‘vtpnet’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘vtpnet.Rnw’ using Sweave
Loading required package: BiocGenerics
Loading required package: generics

Attaching package: ‘generics’

The following objects are masked from ‘package:base’:

    as.difftime, as.factor, as.ordered, intersect, is.element, setdiff,
    setequal, union


Attaching package: ‘BiocGenerics’

The following objects are masked from ‘package:stats’:

    IQR, mad, sd, var, xtabs

The following objects are masked from ‘package:base’:

    Filter, Find, Map, Position, Reduce, anyDuplicated, aperm, append,
    as.data.frame, basename, cbind, colnames, dirname, do.call,
    duplicated, eval, evalq, get, grep, grepl, is.unsorted, lapply,
    mapply, match, mget, order, paste, pmax, pmax.int, pmin, pmin.int,
    rank, rbind, rownames, sapply, saveRDS, table, tapply, unique,
    unsplit, which.max, which.min


Error: processing vignette 'vtpnet.Rnw' failed with diagnostics:
 chunk 2 (label = dog1) 
Error in library(Rgraphviz) : there is no package called ‘Rgraphviz’

--- failed re-building ‘vtpnet.Rnw’

SUMMARY: processing the following file failed:
  ‘vtpnet.Rnw’

Error: Vignette re-building failed.
Execution halted