Requires orphaned package: ‘RGtk2’

Suggests orphaned package: ‘cairoDevice’
Package required but not available: ‘RGtk2’

Package suggested but not available for checking: ‘cairoDevice’

See section ‘The DESCRIPTION file’ in the ‘Writing R Extensions’
manual.
Running ‘run-tests.R’ [4s/7s]
Running the tests in ‘tests/run-tests.R’ failed.
Last 13 lines of output:
   4: initialize(value, ...)
   5: initialize(value, ...)
   6: methods::new(def, ...)
   7: GSlider$new(toolkit, from, to, by, value, horizontal, handler,     action, container, ...)
   8: .gslider.guiWidgetsToolkitRGtk2(toolkit, from, to, by, value,     horizontal, handler, action, container = container, ...)
   9: .gslider(toolkit, from, to, by, value, horizontal, handler, action,     container = container, ...)
  10: gslider(from = 0, to = 100, by = 1, cont = g)
  11: eval(ei, envir)
  12: eval(ei, envir)
  13: withVisible(eval(ei, envir))
  14: source(i)
  15: FUN(X[[i]], ...)
  16: lapply(X = X, FUN = FUN, ...)
  17: sapply(f, function(i) {    message("testing ", i)    source(i)})
  An irrecoverable exception occurred. R is aborting now ...
Running ‘run-tests.R’ [3s/6s]
Running the tests in ‘tests/run-tests.R’ failed.
Last 13 lines of output:
   4: initialize(value, ...)
   5: initialize(value, ...)
   6: methods::new(def, ...)
   7: GSlider$new(toolkit, from, to, by, value, horizontal, handler,     action, container, ...)
   8: .gslider.guiWidgetsToolkitRGtk2(toolkit, from, to, by, value,     horizontal, handler, action, container = container, ...)
   9: .gslider(toolkit, from, to, by, value, horizontal, handler, action,     container = container, ...)
  10: gslider(from = 0, to = 100, by = 1, cont = g)
  11: eval(ei, envir)
  12: eval(ei, envir)
  13: withVisible(eval(ei, envir))
  14: source(i)
  15: FUN(X[[i]], ...)
  16: lapply(X = X, FUN = FUN, ...)
  17: sapply(f, function(i) {    message("testing ", i)    source(i)})
  An irrecoverable exception occurred. R is aborting now ...