Found the following notes/warnings:
  SystemRequirements specified C++11: support has been removed
See ‘/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/simplextree.Rcheck/00install.out’ for details.
* used C++ compiler: ‘Debian clang version 21.1.8 (1+b1)’
Obsolete C++11 standard request will be ignored
checkRd: (-1) simplex_tree.Rd:24: height/width attributes should be in pixels
Found the following notes/warnings:
  SystemRequirements specified C++11: support has been removed
See ‘/home/hornik/tmp/R.check/r-devel-gcc/Work/PKGS/simplextree.Rcheck/00install.out’ for details.
* used C++ compiler: ‘g++-15 (Debian 15.2.0-12) 15.2.0’
Obsolete C++11 standard request will be ignored
checkRd: (-1) simplex_tree.Rd:24: height/width attributes should be in pixels
Found the following significant warnings:
  ./../inst/include/utility/delegate.hpp:113:57: warning: 'unique' is deprecated [-Wdeprecated-declarations]
  ../inst/include/utility/delegate.hpp:113:57: warning: 'unique' is deprecated [-Wdeprecated-declarations]
Found the following additional notes/warnings:
  SystemRequirements specified C++11: support has been removed
See ‘/data/gannet/ripley/R/packages/tests-clang/simplextree.Rcheck/00install.out’ for details.
* used C++ compiler: ‘clang version 21.1.8’
Obsolete C++11 standard request will be ignored
checkRd: (-1) simplex_tree.Rd:24: height/width attributes should be in pixels
Found the following notes/warnings:
  SystemRequirements specified C++11: support has been removed
See ‘/data/gannet/ripley/R/packages/tests-devel/simplextree.Rcheck/00install.out’ for details.
* used C++ compiler: ‘g++ (GCC) 15.1.1 20250521 (Red Hat 15.1.1-2)’
Obsolete C++11 standard request will be ignored
checkRd: (-1) simplex_tree.Rd:24: height/width attributes should be in pixels
Found the following notes/warnings:
  SystemRequirements specified C++11: support has been removed
See 'd:/Rcompile/CRANpkg/local/4.6/simplextree.Rcheck/00install.out' for details.
* used C++ compiler: 'g++.exe (GCC) 14.3.0'
Obsolete C++11 standard request will be ignored
checkRd: (-1) simplex_tree.Rd:24: height/width attributes should be in pixels
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
Specified C++11: please drop specification unless essential
installed size is  9.9Mb
  sub-directories of 1Mb or more:
    libs   9.2Mb
'LazyData' is specified without a 'data' directory
Specified C++11: please drop specification unless essential
installed size is  9.6Mb
  sub-directories of 1Mb or more:
    libs   8.9Mb
'LazyData' is specified without a 'data' directory
Specified C++11: please drop specification unless essential
'LazyData' is specified without a 'data' directory