Found the following significant warnings:
  assoc_mat.cpp:55:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  assoc_mat_full.cpp:56:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  assoc_mat_one_id.cpp:34:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
See '/home/hornik/tmp/R.check/r-devel-clang/Work/PKGS/ANTs.Rcheck/00install.out' for details.
Found the following significant warnings:
  assoc_mat.cpp:55:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  assoc_mat_full.cpp:56:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
  assoc_mat_one_id.cpp:34:6: warning: use of bitwise '&' with boolean operands [-Wbitwise-instead-of-logical]
See ‘/data/gannet/ripley/R/packages/tests-clang/ANTs.Rcheck/00install.out’ for details.
installed size is 15.7Mb
  sub-directories of 1Mb or more:
    libs  13.5Mb
Installation failed.
See ‘/Volumes/Builds/packages/big-sur-arm64/results/4.1/ANTs.Rcheck/00install.out’ for details.
installed size is 14.8Mb
  sub-directories of 1Mb or more:
    libs  12.8Mb
installed size is  6.2Mb
  sub-directories of 1Mb or more:
    libs   4.1Mb
installed size is 14.8Mb
  sub-directories of 1Mb or more:
    libs  12.8Mb
installed size is  6.2Mb
  sub-directories of 1Mb or more:
    libs   4.1Mb

installed size is 38.2Mb
  sub-directories of 1Mb or more:
    libs  37.6Mb
installed size is  5.7Mb
  sub-directories of 1Mb or more:
    libs   5.2Mb
installed size is 48.5Mb
  sub-directories of 1Mb or more:
    libs  48.0Mb
installed size is 50.0Mb
  sub-directories of 1Mb or more:
    libs  49.5Mb
installed size is  9.2Mb
  sub-directories of 1Mb or more:
    libs   8.8Mb
installed size is 50.0Mb
  sub-directories of 1Mb or more:
    libs  49.5Mb
installed size is  9.2Mb
  sub-directories of 1Mb or more:
    libs   8.8Mb

installed size is 11.2Mb
  sub-directories of 1Mb or more:
    doc   9.9Mb
installed size is 11.1Mb
  sub-directories of 1Mb or more:
    doc   9.9Mb
installed size is 11.2Mb
  sub-directories of 1Mb or more:
    doc   9.9Mb
installed size is 11.2Mb
  sub-directories of 1Mb or more:
    doc   9.9Mb
installed size is 11.1Mb
  sub-directories of 1Mb or more:
    doc   9.9Mb
installed size is 11.2Mb
  sub-directories of 1Mb or more:
    doc   9.9Mb
installed size is 11.1Mb
  sub-directories of 1Mb or more:
    doc   9.9Mb