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### Running command:
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###   /home/biocbuild/R/R/bin/R CMD build --keep-empty-dirs --no-resave-data ELViS
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* checking for file ‘ELViS/DESCRIPTION’ ... OK
* preparing ‘ELViS’:
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building ‘ELViS_Toy_Example.Rmd’ using rmarkdown

Quitting from ELViS_Toy_Example.Rmd:168-199 [unnamed-chunk-4]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `.check_versions()`:
! versions must be explicitly specified for 'samtools'
---
Backtrace:
    ▆
 1. ├─base::system.time(...)
 2. └─ELViS::get_depth_matrix(...)
 3.   └─ELViS:::get_envs_samtools_basilisk(...)
 4.     └─basilisk::obtainEnvironmentPath(samtools_env)
 5.       └─basilisk::setupBasiliskEnv(...)
 6.         └─basilisk:::.check_versions(packages, "[^=<>]==[0-9]")
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'ELViS_Toy_Example.Rmd' failed with diagnostics:
versions must be explicitly specified for 'samtools'
--- failed re-building ‘ELViS_Toy_Example.Rmd’

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

Error: Vignette re-building failed.
Execution halted