=> "/opt/local/bin/bmake" ["-C", "/data/jenkins/workspace/pkgsrc-trunk-x86_64/graphics/tex-mp3d-doc", "stage-package-create", "BATCH=1", "DEPENDS_TARGET=/nonexistent"]
=> Creating binary package /home/pbuild/work/graphics/tex-mp3d-doc/work/.packages/tex-mp3d-doc-1.34.tgz
=> Signing binary package /home/pbuild/work/graphics/tex-mp3d-doc/work/.packages/tex-mp3d-doc-1.34.tgz (GPG)
gpg: WARNING: server 'gpg-agent' is older than us (2.4.8 < 2.5.21)
gpg: Note: Outdated servers may lack important security fixes.
gpg: Note: Use the command "gpgconf --kill all" to restart them.
gpg: signing failed: Operation cancelled
gpg: signing failed: Operation cancelled
pkg_admin: GPG could not create signature
*** Error code 1

Stop.
bmake: stopped making "stage-package-create" in /data/jenkins/workspace/pkgsrc-trunk-x86_64/graphics/tex-mp3d-doc