FATAL: java.lang.NullPointerException: hudson.security.SecurityRealm should never return null. jp.ikedam.jenkins.plugins.ldap_sasl.LdapSaslSecurityRealm@3f5cafe1 returned null for idOrFullName='xxx'
java.lang.NullPointerException: hudson.security.SecurityRealm should never return null. jp.ikedam.jenkins.plugins.ldap_sasl.LdapSaslSecurityRealm@3f5cafe1 returned null for idOrFullName='xxx'
	at jenkins.security.UserDetailsCache$Retriever.call(UserDetailsCache.java:176)
	at jenkins.security.UserDetailsCache$Retriever.call(UserDetailsCache.java:161)
	at com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4767)
	at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3568)
	at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2350)
	at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2313)
	at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2228)
Caused: com.google.common.util.concurrent.UncheckedExecutionException
	at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2234)
	at com.google.common.cache.LocalCache.get(LocalCache.java:3965)
	at com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4764)
	at jenkins.security.UserDetailsCache.loadUserByUsername(UserDetailsCache.java:127)
	at hudson.model.User$UserIDCanonicalIdResolver.resolveCanonicalId(User.java:1305)
	at hudson.model.User$CanonicalIdResolver.resolve(User.java:1242)
	at hudson.model.User.get(User.java:465)
	at hudson.model.User.get(User.java:432)
	at hudson.plugins.git.GitChangeSet.findOrCreateUser(GitChangeSet.java:388)
	at hudson.plugins.git.GitChangeSet.getAuthor(GitChangeSet.java:466)
	at jenkins.scm.RunWithSCM.calculateCulprits(RunWithSCM.java:138)
	at hudson.model.AbstractBuild.calculateCulprits(AbstractBuild.java:341)
	at jenkins.scm.RunWithSCM.getCulprits(RunWithSCM.java:96)
	at hudson.model.AbstractBuild.getCulprits(AbstractBuild.java:330)
	at jenkins.scm.RunWithSCM.calculateCulprits(RunWithSCM.java:133)
	at hudson.model.AbstractBuild.calculateCulprits(AbstractBuild.java:341)
	at jenkins.scm.RunWithSCM.getCulprits(RunWithSCM.java:96)
	at hudson.model.AbstractBuild.getCulprits(AbstractBuild.java:330)
	at jenkins.scm.RunWithSCM.calculateCulprits(RunWithSCM.java:133)
	at hudson.model.AbstractBuild.calculateCulprits(AbstractBuild.java:341)
	at jenkins.scm.RunWithSCM.getCulprits(RunWithSCM.java:96)
	at hudson.model.AbstractBuild.getCulprits(AbstractBuild.java:330)
	at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:639)
	at hudson.model.Run.execute(Run.java:1823)
	at hudson.maven.MavenModuleSetBuild.run(MavenModuleSetBuild.java:543)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE