Error(s) in re-building vignettes:
--- re-building ‘R-module.Rmd’ using rmarkdown
--- finished re-building ‘R-module.Rmd’

--- re-building ‘benchmarks.Rmd’ using rmarkdown

Quitting from benchmarks.Rmd:42-69 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `lua_func()`:
! Runtime error in R module from luajr_newstate(): R module:0: /data/gannet/ripley/R/packages/tests-clang/luajr.Rcheck/luajr/libs/luajr.so: undefined symbol: Rf_allocVector
---
Backtrace:
    ▆
 1. └─luajr::lua_func("function(x)\n    local s = 0\n    for i = 1, #x do\n        s = s + x[i]\n    end\n    return s\nend")
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'benchmarks.Rmd' failed with diagnostics:
Runtime error in R module from luajr_newstate(): R module:0: /data/gannet/ripley/R/packages/tests-clang/luajr.Rcheck/luajr/libs/luajr.so: undefined symbol: Rf_allocVector
--- failed re-building ‘benchmarks.Rmd’

--- re-building ‘luajr-module.Rmd’ using rmarkdown
Warning in get_engine(options$engine) :
  Unknown language engine 'lua' (must be registered via knit_engines$set()).
Warning in get_engine(options$engine) :
  Unknown language engine 'lua' (must be registered via knit_engines$set()).
--- finished re-building ‘luajr-module.Rmd’

--- re-building ‘luajr.Rmd’ using rmarkdown

Quitting from luajr.Rmd:41-43 [unnamed-chunk-2]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<error/rlang_error>
Error in `lua()`:
! Runtime error in R module from luajr_newstate(): R module:0: /data/gannet/ripley/R/packages/tests-clang/luajr.Rcheck/luajr/libs/luajr.so: undefined symbol: Rf_allocVector
---
Backtrace:
    ▆
 1. └─luajr::lua("return 'Hello ' .. 'world!'")
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Error: processing vignette 'luajr.Rmd' failed with diagnostics:
Runtime error in R module from luajr_newstate(): R module:0: /data/gannet/ripley/R/packages/tests-clang/luajr.Rcheck/luajr/libs/luajr.so: undefined symbol: Rf_allocVector
--- failed re-building ‘luajr.Rmd’

--- re-building ‘modules.Rmd’ using rmarkdown
--- finished re-building ‘modules.Rmd’

SUMMARY: processing the following files failed:
  ‘benchmarks.Rmd’ ‘luajr.Rmd’

Error: Vignette re-building failed.
Execution halted