Running 'demo_article-jss-example1.R' [3s]
  Comparing 'demo_article-jss-example1.Rout' to 'demo_article-jss-example1.Rout.save' ... OK
  Running 'demo_article-jss-example2.R' [2s]
  Comparing 'demo_article-jss-example2.Rout' to 'demo_article-jss-example2.Rout.save' ...54,56c54,55
< Error: package or namespace load failed for 'viridis' in library.dynam(lib, package, package.lib):
<  DLL 'rlang' not found: maybe not installed for this architecture?
< Failed with error:  'package 'viridis' could not be loaded'
---
> See https://github.com/NCAR/Fields for
>  an extensive vignette, other supplements and source code 
  Running 'demo_article-jss.R' [8s]
  Comparing 'demo_article-jss.Rout' to 'demo_article-jss.Rout.save' ... OK
  Running 'demo_cholesky.R' [1s]
  Comparing 'demo_cholesky.Rout' to 'demo_cholesky.Rout.save' ... OK
  Running 'demo_jss15-BYM.R' [2s]
  Comparing 'demo_jss15-BYM.Rout' to 'demo_jss15-BYM.Rout.save' ... OK
  Running 'demo_jss15-Leroux.R' [4s]
  Comparing 'demo_jss15-Leroux.Rout' to 'demo_jss15-Leroux.Rout.save' ... OK
  Running 'demo_spam.R' [1s]
  Comparing 'demo_spam.Rout' to 'demo_spam.Rout.save' ... OK
  Running 'demo_timing.R' [3s]
  Comparing 'demo_timing.Rout' to 'demo_timing.Rout.save' ... OK
  Running 'jss_areal_counts.R' [2s]
  Comparing 'jss_areal_counts.Rout' to 'jss_areal_counts.Rout.save' ... OK
  Running 'testthat.R' [0s]
Running the tests in 'tests/testthat.R' failed.
Complete output:
  > # HEADER ####################################################
  > # This is file spam/tests/testthat.R.                       #
  > # It is part of the R package spam,                         #
  > #  --> https://CRAN.R-project.org/package=spam              #
  > #  --> https://CRAN.R-project.org/package=spam64            #
  > #  --> https://git.math.uzh.ch/reinhard.furrer/spam         #
  > # by Reinhard Furrer [aut, cre], Florian Gerber [aut],      #
  > #    Roman Flury [aut], Daniel Gerber [ctb],                #
  > #    Kaspar Moesinger [ctb]                                 #
  > # HEADER END ################################################
  > 
  > library("testthat")
  Error: package or namespace load failed for 'testthat' in library.dynam(lib, package, package.lib):
   DLL 'rlang' not found: maybe not installed for this architecture?
  Execution halted