=> Bootstrap dependency digest>=20211023: found digest-20220214
=> Checksum BLAKE2s OK for squirrelmail-webmail-1.4.23pre15037.tar.xz
=> Checksum SHA512 OK for squirrelmail-webmail-1.4.23pre15037.tar.xz
mkdir: /tmp/mail/squirrelmail: Permission denied
*** Error code 1

Stop.
make: stopped in /amd/pkgsrc/CHROOT/P/pkgsrc/mail/squirrelmail