Have you checked the filters that are ignoring 'false positives'? maybe those needs to be updated?
The are in the 'exclude-filters.xml' files under each project and maintained by the ovirt-engine maintainers.
[1] 08:13:21 [FINDBUGS] Collecting findbugs analysis files...
08:13:23 [FINDBUGS] Finding all files that match the pattern **/findbugsXml.xml
08:13:23 [FINDBUGS] Parsing 34 files in /home/jenkins/workspace/ovirt-engine_master_find-bugs_created
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/extensions-tool/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/aaa/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/auth-plugin/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/bll/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/branding/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/builtin-extensions/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/common/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/compat/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/dal/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/docs/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/enginesso/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/extensions-api-root/extensions-api/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/extensions-manager/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/logger/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/restapi/interface/common/jaxrs/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/restapi/interface/definition/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/restapi/jaxrs/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/restapi/types/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/scheduler/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/searchbackend/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/services/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/utils/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/uutils/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/vdsbroker/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/modules/welcome/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/backend/manager/tools/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/build-tools-root/ovirt-checkstyle-extension/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/frontend/webadmin/modules/frontend/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/frontend/webadmin/modules/gwt-common/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/frontend/webadmin/modules/gwt-extension/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/frontend/webadmin/modules/uicommonweb/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/frontend/webadmin/modules/uicompat/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/frontend/webadmin/modules/userportal-gwtp/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Successfully parsed file /home/jenkins/workspace/ovirt-engine_master_find-bugs_created/ovirt-engine/frontend/webadmin/modules/webadmin/target/findbugsXml.xml with 0 unique warnings and 0 duplicates.
08:13:23 [FINDBUGS] Computing warning deltas based on reference build #11731
08:13:23 [FINDBUGS] Ignore new warnings since this is the first valid build
08:13:23 [FINDBUGS] Plug-in Result: Success - no threshold has been exceeded