Building the WireMock tests fails with

Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebugAndroidTest'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/LICENSE
File1: /Users/ohad/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-annotations/2.8.0/45b426f7796b741035581a176744d91090e2e6fb/jackson-annotations-2.8.0.jar
File2: /Users/ohad/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-core/2.8.5/60d059f5d2930ccd1ef03535b713fd9f933d1ba7/jackson-core-2.8.5.jar
File3: /Users/ohad/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-databind/2.8.5/b3035f37e674c04dafe36a660c3815cc59f764e2/jackson-databind-2.8.5.jar

I have fixed it by adding:
exclude group: 'com.fasterxml.jackson.core'
to WireMock build rule:
androidTestCompile("com.github.tomakehurst:wiremock:2.6.0") {