upgrade to gradle 6.8.2

findbugs -> spotbugs

build.gradle

@@ -10,12 +10,12 @@ buildscript {
 
 plugins {
     id "com.jfrog.bintray" version "1.3.1"
+    id "com.github.spotbugs" version "4.6.1"
 }
 
 apply plugin: 'org.asciidoctor.convert'
 apply plugin: 'java'
 apply plugin: 'idea'
-apply plugin: 'findbugs'
 apply plugin: 'maven-publish'
 apply plugin: 'checkstyle'
 
@@ -142,14 +142,19 @@ checkstyle {
     toolVersion = "6.16.1"
 }
 
-findbugs {
+spotbugs {
+    ignoreFailures = true
+
     excludeFilter = file("config/findbugs/findbugs-exclude.xml")
 }
 
-tasks.withType(FindBugs) {
+spotbugsMain {
     reports {
-        xml.enabled = false
-        html.enabled = true
+        html {
+            enabled = true
+            destination = file("$buildDir/reports/spotbugs/main/spotbugs.html")
+            stylesheet = 'fancy-hist.xsl'
+        }
     }
 }
 

config/findbugs/findbugs-exclude.xml

@@ -1,4 +1,8 @@
-<FindBugsFilter>
+<?xml version="1.0" encoding="UTF-8"?>
+<FindBugsFilter
+        xmlns="https://github.com/spotbugs/filter/3.0.0"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="https://github.com/spotbugs/filter/3.0.0 https://raw.githubusercontent.com/spotbugs/spotbugs/3.1.0/spotbugs/etc/findbugsfilter.xsd">
     <Match>
         <Class name="com.github.therapi.core.interceptor.SimpleMethodInvocation"/>
         <Bug pattern="EI_EXPOSE_REP"/>

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.9-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.8.2-bin.zip