Error(s) in re-building vignettes:
--- re-building 'stanmath.Rmd' using rmarkdown
Building shared library for Rcpp code chunk...
In file included from D:/RCompile/CRANpkg/lib/4.0gcc8/StanHeaders/include/stan/math/prim/arr/functor/integrate_ode_rk45.hpp:17,
                 from D:/RCompile/CRANpkg/lib/4.0gcc8/StanHeaders/include/stan/math/prim/arr.hpp:46,
                 from D:/RCompile/CRANpkg/lib/4.0gcc8/StanHeaders/include/stan/math/prim/mat.hpp:344,
                 from D:/RCompile/CRANpkg/lib/4.0gcc8/StanHeaders/include/stan/math/rev/mat.hpp:12,
                 from D:/RCompile/CRANpkg/lib/4.0gcc8/StanHeaders/include/stan/math.hpp:4,
                 from file3225c1f3d6e5d.cpp:6:
D:/RCompile/CRANpkg/lib/4.0gcc8/BH/include/boost/numeric/odeint.hpp:31:10: fatal error: boost/numeric/odeint/stepper/runge_kutta_cash_karp54_classic.hpp: No such file or directory
 #include <boost/numeric/odeint/stepper/runge_kutta_cash_karp54_classic.hpp>
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [D:/RCompile/recent/R4/etc/x64/Makeconf:215: file3225c1f3d6e5d.o] Error 1
make[1]: Entering directory '/d/temp/RtmpoRNvlY/sourceCpp-x86_64-w64-mingw32-1.0.3/sourcecpp_3225c1726983'
d:/Compiler/rtools40/mingw64/bin/g++   -std=gnu++14  -I"D:/RCompile/recent/R4/include" -DNDEBUG   -I"D:/RCompile/CRANpkg/lib/4.0gcc8/Rcpp/include" -I"D:/RCompile/CRANpkg/lib/4.0gcc8/BH/include" -I"D:/RCompile/CRANpkg/lib/4.0gcc8/RcppEigen/include" -I"D:/RCompile/CRANpkg/lib/4.0gcc8/StanHeaders/include" -I"D:/temp/RtmpoRNvlY/sourceCpp-x86_64-w64-mingw32-1.0.3"   -I"d:/Compiler/gcc-4.9.3/local330/include"     -O2 -Wall  -mtune=core2  -c file3225c1f3d6e5d.cpp -o file3225c1f3d6e5d.o
make[1]: Leaving directory '/d/temp/RtmpoRNvlY/sourceCpp-x86_64-w64-mingw32-1.0.3/sourcecpp_3225c1726983'
Quitting from lines 69-146 (stanmath.Rmd) 
Error: processing vignette 'stanmath.Rmd' failed with diagnostics:
Error 1 occurred building shared library.
--- failed re-building 'stanmath.Rmd'

SUMMARY: processing the following file failed:
  'stanmath.Rmd'

Error: Vignette re-building failed.
Execution halted