Looks like https://github.com/elastic/elasticsearch/issues/86382 but that should have been fixed in May.

**Build scan:**
https://gradle-enterprise.elastic.co/s/xb7cxwzdk6es6/tests/:libs:elasticsearch-core:test/org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests/classMethod

**Reproduction line:**
`null`

**Applicable branches:**
main

**Reproduces locally?:**
Didn't try

**Failure history:**
https://gradle-enterprise.elastic.co/scans/tests?tests.container=org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests&tests.test=classMethod

**Failure excerpt:**
```
java.io.IOException: Could not remove the following files (in the order of attempts):
   C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001\testResourcesParentNonPkgName-001\parent.jar: java.nio.file.FileSystemException: C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001\testResourcesParentNonPkgName-001\parent.jar: The process cannot access the file because it is being used by another process
   C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001\testResourcesParentNonPkgName-001: java.nio.file.DirectoryNotEmptyException: C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001\testResourcesParentNonPkgName-001
   C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001\testResourcesParentJavaPkgName-001\parent.jar: java.nio.file.FileSystemException: C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001\testResourcesParentJavaPkgName-001\parent.jar: The process cannot access the file because it is being used by another process
   C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001\testResourcesParentJavaPkgName-001: java.nio.file.DirectoryNotEmptyException: C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001\testResourcesParentJavaPkgName-001
   C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001: java.nio.file.DirectoryNotEmptyException: C:\Users\jenkins\workspace\platform-support\253\libs\core\build\testrun\test\temp\org.elasticsearch.core.internal.provider.EmbeddedImplClassLoaderTests_E8BB9E0290B7F7A7-001

  at __randomizedtesting.SeedInfo.seed([E8BB9E0290B7F7A7]:0)
  at org.apache.lucene.util.IOUtils.rm(IOUtils.java:341)
  at org.apache.lucene.tests.util.TestRuleTemporaryFilesCleanup.afterAlways(TestRuleTemporaryFilesCleanup.java:209)
  at com.carrotsearch.randomizedtesting.rules.TestRuleAdapter$1.afterAlways(TestRuleAdapter.java:31)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:43)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:850)
  at java.lang.Thread.run(Thread.java:833)

```
libs/core/src/test/java/org/elasticsearch/core/internal/provider/EmbeddedImplClassLoaderTests.java
/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */
package org.elasticsearch.core.internal.provider;
import org.elasticsearch.core.SuppressForbidden;
import org.elasticsearch.core.internal.provider.EmbeddedImplClassLoader.CompoundEnumeration;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.test.PrivilegedOperations;
import org.elasticsearch.test.compiler.InMemoryJavaCompiler;
import org.elasticsearch.test.jar.JarUtils;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.net.URI;
import java.net.URL;
import java.net.URLClassLoader;