Failure on executing the goal check on spotless-maven-plugin (fail to to load eclipse groovy formatter)

[mmakieh]

If you are submitting a bug, please include the following:

• summary of problem:
  Our Jenkins pipeline builds are ending-up with error due to a failure on executing the goal check on spotless-maven-plugin. It looks like spotless is failing to load eclipse groovy formatter that we use to format the JenkinsFile of our projects.

• apache maven version:
  3.9

• spotless version:
  2.38.0

• operating system and version:
  rhel 9

• copy-paste your full Spotless configuration block(s), and a link to a public git repo that reproduces the problem if possible:
  <plugin> <groupId>com.diffplug.spotless</groupId> <artifactId>spotless-maven-plugin</artifactId> <version>${spotless-maven-plugin.version}</version> <configuration> <lineEndings>UNIX</lineEndings> <!-- define a language-specific format --> <java> <!-- apply a specific flavor of google-java-format --> <googleJavaFormat> <version>1.17.0</version> <style>GOOGLE</style> </googleJavaFormat> </java> <groovy> <includes> <include>Jenkinsfile*</include> </includes> <importOrder /> <greclipse> <version>4.26</version> </greclipse> </groovy> <pom> <sortPom /> </pom> <sql> <includes> <include>**/auto-formatted-sql/*.sql</include> </includes> <dbeaver /> </sql> <markdown> <includes> <include>**/*.md</include> </includes> <flexmark /> </markdown> <json> <includes> <include>**/*.json</include> </includes> <gson> <indentSpaces>2</indentSpaces> <sortByKeys>false</sortByKeys> <escapeHtml>false</escapeHtml> <version>2.10.1</version> </gson> </json> </configuration> </plugin>

• copy-paste the full content of any console errors emitted by gradlew spotless[Apply/Check] --stacktrace:

  Example of console output of jenkins build of our project:

  [INFO] --- spotless:2.38.0:check (default-cli) @ farexplorer ---
  [INFO] ------------------------------------------------------------------------
  [INFO] BUILD FAILURE
  [INFO] ------------------------------------------------------------------------
  [INFO] Total time: 03:48 min (Wall Clock)
  [INFO] Finished at: 2023-08-22T13:15:24Z
  [INFO] ------------------------------------------------------------------------

  [ERROR] Failed to execute goal com.diffplug.spotless:spotless-maven-plugin:2.38.0:check (default-cli) on project farexplorer: Execution default-cli of goal com.diffplug.spotless:spotless-maven-plugin:2.38.0:check failed: java.io.IOException: Failed to load eclipse groovy formatter: java.lang.RuntimeException: java.net.ProtocolException: unexpected end of stream -> [Help 1]

[Jiehong]

Experiencing the same, and the formatter seems to wait for a very long time at spotless:check maven plugin step until this exception is raised.

It seems to happen mostly during CI/CD for some reason

[nedtwigg]

This is likely a dupe of #1658