* installing *source* package 'diffobj' ...
** this is package 'diffobj' version '0.3.6'
** package 'diffobj' successfully unpacked and MD5 sums checked
ERROR: cannot remove earlier installation, is it in use?
* removing 'd:/Rcompile/CRANpkg/lib/4.6/diffobj'
* restoring previous 'd:/Rcompile/CRANpkg/lib/4.6/diffobj'
Warning in file.copy(lp, dirname(pkgdir), recursive = TRUE, copy.date = TRUE) :
  problem copying d:\Rcompile\CRANpkg\lib\4.6\00LOCK-diffobj\diffobj\libs\x64\diffobj.dll to d:\Rcompile\CRANpkg\lib\4.6\diffobj\libs\x64\diffobj.dll: Permission denied