./gradlew clean build --profile produced spurious PMD errors

[sjudd]

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':library:violations'.
> javax.script.ScriptException: Too many violations found, max is 0 but found 3
  /Users/judds/opensource/glide/library/src/main/java/com/bumptech/glide/load/engine/Engine.java
  ╔══════════╤═════════════════════╤══════════╤══════╤══════════════════════════════════════════════════════════════════════════════════════════════════════╗
  ║ Reporter │ Rule                │ Severity │ Line │ Message                                                                                              ║
  ╠══════════╪═════════════════════╪══════════╪══════╪══════════════════════════════════════════════════════════════════════════════════════════════════════╣
  ║ PMD      │ UnusedPrivateMethod │ WARN     │ 255  │ Avoid unused private methods such as 'loadFromCache(Key,boolean)'.                                   ║
  ║          │                     │          │      │                                                                                                      ║
  ║          │                     │          │      │                                                                                                      ║
  ║          │                     │          │      │ Best Practices https://pmd.github.io/pmd-6.0.0/pmd_rules_java_bestpractices.html#unusedprivatemethod ║
  ╟──────────┼─────────────────────┼──────────┼──────┼──────────────────────────────────────────────────────────────────────────────────────────────────────╢
  ║ PMD      │ UnusedPrivateMethod │ WARN     │ 243  │ Avoid unused private methods such as 'loadFromActiveResources(Key,boolean)'.                         ║
  ║          │                     │          │      │                                                                                                      ║
  ║          │                     │          │      │                                                                                                      ║
  ║          │                     │          │      │ Best Practices https://pmd.github.io/pmd-6.0.0/pmd_rules_java_bestpractices.html#unusedprivatemethod ║
  ╟──────────┼─────────────────────┼──────────┼──────┼──────────────────────────────────────────────────────────────────────────────────────────────────────╢
  ║ PMD      │ UnusedPrivateMethod │ WARN     │ 238  │ Avoid unused private methods such as 'logWithTimeAndKey(String,long,Key)'.                           ║
  ║          │                     │          │      │                                                                                                      ║
  ║          │                     │          │      │                                                                                                      ║
  ║          │                     │          │      │ Best Practices https://pmd.github.io/pmd-6.0.0/pmd_rules_java_bestpractices.html#unusedprivatemethod ║
  ╚══════════╧═════════════════════╧══════════╧══════╧══════════════════════════════════════════════════════════════════════════════════════════════════════╝
  
  Summary of /Users/judds/opensource/glide/library/src/main/java/com/bumptech/glide/load/engine/Engine.java
  ╔══════════╤══════╤══════╤═══════╤═══════╗
  ║ Reporter │ INFO │ WARN │ ERROR │ Total ║
  ╠══════════╪══════╪══════╪═══════╪═══════╣
  ║ PMD      │ 0    │ 3    │ 0     │ 3     ║
  ╟──────────┼──────┼──────┼───────┼───────╢
  ║          │ 0    │ 3    │ 0     │ 3     ║
  ╚══════════╧══════╧══════╧═══════╧═══════╝
  
  
  Summary
  ╔══════════╤══════╤══════╤═══════╤═══════╗
  ║ Reporter │ INFO │ WARN │ ERROR │ Total ║
  ╠══════════╪══════╪══════╪═══════╪═══════╣
  ║ PMD      │ 0    │ 3    │ 0     │ 3     ║
  ╟──────────┼──────┼──────┼───────┼───────╢
  ║          │ 0    │ 3    │ 0     │ 3     ║
  ╚══════════╧══════╧══════╧═══════╧═══════╝


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

* Get more help at https://help.gradle.org

[sjudd]

Not reproducible with just ./gradlew build, so --profile is doing something strange...

[TWiStErRob]

Do you have the --profile output still? Check if there's a javac in it. I think PMD may be missing a dependency on "compileDebugWithJavac" so that it can pull in classpath += files("${project.buildDir}/intermediates/classes/debug/"), see pmd/pmd#819

[TWiStErRob]

You don't need --profile to reproduce this issue: gradlew :l:clean :l:pmd, currently gives me:

1	com\bumptech\glide\RequestBuilder.java	873	Avoid unused private methods such as 'buildRequest(Target,RequestListener,RequestOptions)'.
2	com\bumptech\glide\load\engine\Engine.java	238	Avoid unused private methods such as 'logWithTimeAndKey(String,long,Key)'.
3	com\bumptech\glide\load\engine\Engine.java	243	Avoid unused private methods such as 'loadFromActiveResources(Key,boolean)'.
4	com\bumptech\glide\load\engine\Engine.java	255	Avoid unused private methods such as 'loadFromCache(Key,boolean)'.
5	com\bumptech\glide\request\RequestOptions.java	1153	Avoid unused private methods such as 'scaleOnlyTransform(DownsampleStrategy,Transformation)'.
6	com\bumptech\glide\request\RequestOptions.java	1159	Avoid unused private methods such as 'optionalScaleOnlyTransform(DownsampleStrategy,Transformation)'.

(the first one is probably introduced when I refactored that class in #2777)