printenv file collision

mbdyn is replacing printenv from the coreutils package

>>> Installing (1 of 1) sci-physics/mbdyn-1.7.3_p20210905::guru
 * checking 80 files for package collisions
 * This package will overwrite one or more files that may belong to other
 * packages (see list below). You can use a command such as `portageq
 * owners / <filename>` to identify the installed package that owns a
 * file. If portageq reports that only one package owns a file then do
 * NOT file a bug report. A bug report is only useful if it identifies at
 * least two or more packages that are known to install the same file(s).
 * If a collision occurs and you can not explain where the file came from
 * then you should simply ignore the collision since there is not enough
 * information to determine if a real problem exists. Please do NOT file
 * a bug report at https://bugs.gentoo.org/ unless you report exactly 
 * which two packages install the same file(s). See
 * https://wiki.gentoo.org/wiki/Knowledge_Base:Blockers for tips on how
 * to solve the problem. And once again, please do NOT file a bug report
 * unless you have completely understood the above message.
 *                                                                                                                    
 * Detected file collision(s):             
 * 
 *      /usr/bin/printenv
 *      /usr/lib/debug/usr/bin/printenv.debug
 * 
 * Searching all installed packages for file collisions...
 * 
 * Press Ctrl-C to Stop
 * 
 * sys-apps/coreutils-8.32-r1:0::gentoo
 *      /usr/bin/printenv
 *      /usr/lib/debug/usr/bin/printenv.debug
 * 
 * Package 'sci-physics/mbdyn-1.7.3_p20210905' NOT merged due to file
 * collisions. If necessary, refer to your elog messages for the whole
 * content of the above message.