The plugin is effectively unmaintained:

• Last release: 11 years ago
• Unresolved security vulnerability: https://www.jenkins.io/security/advisory/2022-07-27/#SECURITY-2747
• Last commit to GitHub repo: 2 years ago (https://github.com/jenkinsci/buckminster-plugin/commits/master/)
• The Buckminster Eclipse project has been archived a long time ago.

Therefore, I'd recommend deprecating this plugin, see https://www.jenkins.io/doc/developer/plugin-governance/deprecating-or-removing-plugin/