Debugging gradle.build / jenkins issue

build.gradle

plugins {
    id 'org.jenkins-ci.jpi' version '0.22.0'
    id 'groovy'
    id 'java'
    id 'idea'
}

build.dependsOn jpi

sourceCompatibility = 1.8
targetCompatibility = 1.8

group = 'org.jenkins-ci.plugins'
version = '0.0.1-DEV'

idea {
    module {
        downloadJavadoc = true
        downloadSources = true
    }
}

jenkinsPlugin {
    coreVersion = '2.60.3'
    shortName = 'continious'
    displayName = 'Continious'
    pluginFirstClassLoader = true
    maskClasses = 'groovy.grape org.apache.commons.codec'
    compatibleSinceVersion = '1.60.0'
    disabledTestInjection = false
    localizerOutputDir = "${project.buildDir}/generated-src/localizer"
    fileExtension = 'hpi'
    configureRepositories = false
    configurePublishing = false
}

//configurations {
  // Dunno if it is needed but it errors trying to find it
    //testCompile.exclude group: 'org.netbeans.modules', module: 'org-netbeans-insane'
//}

repositories {
    maven { url 'https://repo.jenkins-ci.org/releases/' }
    maven { url 'https://repo.jenkins-ci.org/releases/org/jenkins-ci/main/jenkins-core/' }

    // org-netbeans-insane is not available (compiled) from the jenkins repo, so add this.
    maven { url "http://bits.netbeans.org/nexus/content/groups/netbeans" }
    // http://bits.netbeans.org/nexus/content/groups/netbeans/org/netbeans/modules/org-netbeans-insane/RELEASE72/

    // Needed for Jenkins to find jbcrypt...?
    maven { url 'https://repo.jenkins-ci.org/public/' }

    //maven {url "http://bits.netbeans.org/maven2" }

    mavenCentral()
}

dependencies {
    compile 'org.codehaus.groovy:groovy-all:2.4.8'

    //testCompile 'junit:junit:4.12'
    //.apparently required else test build fails
    //testCompile group: 'org.netbeans.modules', name: 'org-netbeans-insane', version: 'RELEASE72'

    // Taken from Dockerfile for cicd image
    jenkinsPlugins 'org.jenkins-ci.plugins:branch-api:2.0.11@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:build-pipeline-plugin:1.5.7.1@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:build-timeout:1.18@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:cloudbees-folder:6.1.2@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:credentials-binding:1.13@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:docker-workflow:1.13@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:dockerhub-notification:2.2.0@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:email-ext:2.59@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:git:3.5.1@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:github-branch-source:2.2.3@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:github-oauth:0.27@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:github-pullrequest:0.1.0-rc26@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:job-dsl:1.65@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:jquery:1.11.2-1@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:mailer:1.20@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:matrix-auth:1.7@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:modernstatus:1.2@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:pipeline-github-lib:1.0@jar'
    jenkinsPlugins 'org.jenkins-ci.plugins:swarm:3.4@jar'

    compile fileTree(dir: 'lib', include: ['*.jar'])

}

output.log

$ ./gradlew build
:localizer UP-TO-DATE
:compileJava NO-SOURCE
:compileGroovy
:processResources NO-SOURCE
:classes
:war UP-TO-DATE
:assemble UP-TO-DATE
:generate-test-hpl UP-TO-DATE
:insertTest UP-TO-DATE
:compileTestJava FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Could not resolve all files for configuration ':testCompileClasspath'.
> Could not find org-netbeans-insane.jar (org.netbeans.modules:org-netbeans-insane:RELEASE72).
  Searched in the following locations:
      https://repo.jenkins-ci.org/releases/org/netbeans/modules/org-netbeans-insane/RELEASE72/org-netbeans-insane-RELEASE72.jar

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 2.645 secs