* using log directory ‘/Users/ripley/R/packages/tests-devel/deisotoper.Rcheck’
* using R Under development (unstable) (2021-08-30 r80832)
* using platform: aarch64-apple-darwin20.6.0 (64-bit)
* using session charset: UTF-8
* using option ‘--no-stop-on-test-error’
* checking for file ‘deisotoper/DESCRIPTION’ ... OK
* checking extension type ... Package
* this is package ‘deisotoper’ version ‘0.0.7’
* checking package namespace information ... OK
* checking package dependencies ... OK
* checking if this is a source package ... OK
* checking if there is a namespace ... OK
* checking for executable files ... OK
* checking for hidden files and directories ... OK
* checking for portable file names ... OK
* checking for sufficient/correct file permissions ... OK
* checking whether package ‘deisotoper’ can be installed ... ERROR
Installation failed.
See ‘/Users/ripley/R/packages/tests-devel/deisotoper.Rcheck/00install.out’ for details.
* DONE

Status: 1 ERROR
See
  ‘/Users/ripley/R/packages/tests-devel/deisotoper.Rcheck/00check.log’
for details.

        5.04 real         1.69 user         0.67 sys