Getting a bunch of warnings when building using the gradle plugin. Not sure if this is something in my environment or not. The plugin I am building is pretty minimal.

C:\Users\USER\.m2\repository\org\jenkins-ci\main\jenkins-core\1.447\jenkins-core-1.447.jar(jenkins/model/Jenkins.class): warning: Cannot find annotation metho
d 'value()' in type 'SuppressWarnings': class file for edu.umd.cs.findbugs.annotations.SuppressWarnings not found
C:\Users\USER\.m2\repository\org\jenkins-ci\main\jenkins-core\1.447\jenkins-core-1.447.jar(jenkins/model/Jenkins.class): warning: Cannot find annotation metho
d 'value()' in type 'SuppressWarnings'
warning: Supported source version 'RELEASE_6' from annotation processor 'jenkins.PluginSubtypeMarker' less than -source '1.7'
warning: Supported source version 'RELEASE_6' from annotation processor 'org.kohsuke.stapler.jsr269.ConstructorProcessor' less than -source '1.7'
warning: Supported source version 'RELEASE_6' from annotation processor 'org.kohsuke.stapler.jsr269.ExportedBeanAnnotationProcessor' less than -source '1.7'
warning: Supported source version 'RELEASE_6' from annotation processor 'org.kohsuke.stapler.jsr269.QueryParameterAnnotationProcessor' less than -source '1.7'
warning: Supported source version 'RELEASE_6' from annotation processor 'org.jvnet.hudson.annotation_indexer.AnnotationProcessorImpl' less than -source '1.7'
warning: Supported source version 'RELEASE_6' from annotation processor 'net.java.sezpoz.impl.Indexer6' less than -source '1.7'
Note: org.jenkinsci.plugins.mailer2.Mailer2Publisher.DESCRIPTOR indexed under hudson.Extension
C:\Users\USER\.m2\repository\org\jenkins-ci\main\jenkins-core\1.447\jenkins-core-1.447.jar(jenkins/model/Jenkins.class): warning: Cannot find annotation metho
d 'value()' in type 'SuppressWarnings': class file for edu.umd.cs.findbugs.annotations.SuppressWarnings not found
C:\Users\USER\.m2\repository\org\jenkins-ci\main\jenkins-core\1.447\jenkins-core-1.447.jar(jenkins/model/Jenkins.class): warning: Cannot find annotation metho
d 'value()' in type 'SuppressWarnings'
C:\Users\USER\.m2\repository\org\jenkins-ci\main\jenkins-core\1.447\jenkins-core-1.447.jar(jenkins/model/Jenkins.class): warning: Cannot find annotation metho
d 'value()' in type 'SuppressWarnings': class file for edu.umd.cs.findbugs.annotations.SuppressWarnings not found
C:\Users\USER\.m2\repository\org\jenkins-ci\main\jenkins-core\1.447\jenkins-core-1.447.jar(jenkins/model/Jenkins.class): warning: Cannot find annotation metho
d 'value()' in type 'SuppressWarnings'