Error(s) in re-building vignettes:
--- re-building ‘SBC.Rmd’ using rmarkdown
Creating a 'stanmodel' object beta_binomial
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'SBC.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘SBC.Rmd’

--- re-building ‘external.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'external.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘external.Rmd’

--- re-building ‘rstan.Rmd’ using rmarkdown
In file included from <built-in>:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Dense:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Core:535:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from <built-in>:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Dense:2:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/LU:47:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from <built-in>:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Dense:3:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Cholesky:12:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Jacobi:29:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from <built-in>:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Dense:3:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Cholesky:43:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from <built-in>:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Dense:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/QR:17:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Householder:27:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from <built-in>:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Dense:5:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/SVD:48:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from <built-in>:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Dense:6:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Geometry:58:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from <built-in>:1:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/fun/Eigen.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Dense:7:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Eigenvalues:58:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:31:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Sparse:26:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/SparseCore:66:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:31:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Sparse:27:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/OrderingMethods:71:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:31:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Sparse:29:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/SparseCholesky:43:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:31:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Sparse:32:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/SparseQR:35:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:31:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/Sparse:33:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/IterativeLinearSolvers:46:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:32:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/CholmodSupport:45:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:35:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/unsupported/Eigen/KroneckerProduct:34:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/unsupported/Eigen/../../Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:39:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/unsupported/Eigen/Polynomials:135:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/unsupported/Eigen/../../Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:8:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigen.h:25:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/RcppEigenForward.h:40:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/unsupported/Eigen/SparseExtra:51:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/RcppEigen/include/unsupported/Eigen/../../Eigen/src/Core/util/ReenableStupidWarnings.h:10:30: warning: pragma diagnostic pop could not pop, no matching push [-Wunknown-pragmas]
    #pragma clang diagnostic pop
                             ^
In file included from file1335b46ab23df.cpp:11:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/src/stan/model/standalone_functions_header.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/rev/mat.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/rev/core.hpp:45:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/rev/core/set_zero_all_adjoints.hpp:14:13: warning: unused function 'set_zero_all_adjoints' [-Wunused-function]
static void set_zero_all_adjoints() {
            ^
In file included from file1335b46ab23df.cpp:11:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/src/stan/model/standalone_functions_header.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/rev/mat.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/rev/core.hpp:46:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/rev/core/set_zero_all_adjoints_nested.hpp:17:13: warning: 'static' function 'set_zero_all_adjoints_nested' declared in header file should be declared 'static inline' [-Wunneeded-internal-declaration]
static void set_zero_all_adjoints_nested() {
            ^
In file included from file1335b46ab23df.cpp:11:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/src/stan/model/standalone_functions_header.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math.hpp:4:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/rev/mat.hpp:12:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat.hpp:336:
In file included from /Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/prob/poisson_log_glm_log.hpp:5:
/Volumes/Builds/packages/high-sierra-x86_64/Rlib/4.0/StanHeaders/include/stan/math/prim/mat/prob/poisson_log_glm_lpmf.hpp:64:59: warning: unused typedef 'T_alpha_val' [-Wunused-local-typedef]
      typename partials_return_type<T_alpha>::type>::type T_alpha_val;
                                                          ^
20 warnings generated.
ld: warning: text-based stub file /System/Library/Frameworks//CoreFoundation.framework/CoreFoundation.tbd and library file /System/Library/Frameworks//CoreFoundation.framework/CoreFoundation are out of sync. Falling back to library file for linking.
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'rstan.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘rstan.Rmd’

--- re-building ‘stanfit-objects.Rmd’ using rmarkdown
dyld: lazy symbol binding failed: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: ____chkstk_darwin
  Referenced from: /usr/local/bin/pandoc (which was built for Mac OS X 10.15)
  Expected in: /usr/lib/libSystem.B.dylib

Error: processing vignette 'stanfit-objects.Rmd' failed with diagnostics:
pandoc document conversion failed with error 6
--- failed re-building ‘stanfit-objects.Rmd’

SUMMARY: processing the following files failed:
  ‘SBC.Rmd’ ‘external.Rmd’ ‘rstan.Rmd’ ‘stanfit-objects.Rmd’

Error: Vignette re-building failed.
Execution halted