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###
### Running command:
###
###   chmod a+r banocc -R && C:\Users\biocbuild\bbs-3.14-bioc\R\bin\R.exe CMD build --keep-empty-dirs --no-resave-data banocc
###
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* checking for file 'banocc/DESCRIPTION' ... OK
* preparing 'banocc':
* checking DESCRIPTION meta-information ... OK
* installing the package to build vignettes
* creating vignettes ... ERROR
--- re-building 'banocc-vignette.Rmd' using rmarkdown
DIAGNOSTIC(S) FROM PARSER:
Info: integer division implicitly rounds to integer. Found int division: P * P - 1 / 2
 Positive values rounded down, negative values rounded up or down in platform-dependent way.

make cmd is
  make -f "C:/Users/BIOCBU~1/BBS-3~1.14-/R/etc/x64/Makeconf" -f "C:/Users/BIOCBU~1/BBS-3~1.14-/R/share/make/winshlib.mk" CXX='$(CXX14) $(CXX14STD)' CXXFLAGS='$(CXX14FLAGS)' CXXPICFLAGS='$(CXX14PICFLAGS)' SHLIB_LDFLAGS='$(SHLIB_CXX14LDFLAGS)' SHLIB_LD='$(SHLIB_CXX14LD)' SHLIB="file103c34678e9.dll" WIN=64 TCLBIN=64 OBJECTS="file103c34678e9.o"

make would use
if test "zfile103c34678e9.o" != "z"; then \
  if test -e "file103c34678e9-win.def"; then \
    echo "C:/rtools40/mingw64/bin/"g++  -shared -s -static-libgcc -o file103c34678e9.dll file103c34678e9-win.def file103c34678e9.o  -L"C:/extsoft/lib/x64" -L"C:/extsoft/lib"  -L"C:/Users/BIOCBU~1/BBS-3~1.14-/R/bin/x64" -lR ; \
    "C:/rtools40/mingw64/bin/"g++  -shared -s -static-libgcc -o file103c34678e9.dll file103c34678e9-win.def file103c34678e9.o  -L"C:/extsoft/lib/x64" -L"C:/extsoft/lib"  -L"C:/Users/BIOCBU~1/BBS-3~1.14-/R/bin/x64" -lR ; \
  else \
    echo EXPORTS > tmp.def; \
    "C:/rtools40/mingw64/bin/"nm file103c34678e9.o | sed -n 's/^.* [BCDRT] / /p' | sed -e '/[.]refptr[.]/d' -e '/[.]weak[.]/d' | sed 's/[^ ][^ ]*/"&"/g'  >> tmp.def; \
    echo "C:/rtools40/mingw64/bin/"g++  -shared -s -static-libgcc -o file103c34678e9.dll tmp.def file103c34678e9.o  -L"C:/extsoft/lib/x64" -L"C:/extsoft/lib"  -L"C:/Users/BIOCBU~1/BBS-3~1.14-/R/bin/x64" -lR ; \
    "C:/rtools40/mingw64/bin/"g++  -shared -s -static-libgcc -o file103c34678e9.dll tmp.def file103c34678e9.o  -L"C:/extsoft/lib/x64" -L"C:/extsoft/lib"  -L"C:/Users/BIOCBU~1/BBS-3~1.14-/R/bin/x64" -lR ; \
    rm -f tmp.def; \
  fi \
fi
Quitting from lines 138-142 (banocc-vignette.Rmd) 
Quitting from lines 138-142 (banocc-vignette.Rmd) 
Error: processing vignette 'banocc-vignette.Rmd' failed with diagnostics:
invalid connection
--- failed re-building 'banocc-vignette.Rmd'

SUMMARY: processing the following file failed:
  'banocc-vignette.Rmd'

Error: Vignette re-building failed.
Execution halted