[INFO] --- maven-checkstyle-plugin:3.2.0:check (check-style) @ nifi-nar-maven-plugin ---
[WARNING] src/main/java/org/apache/nifi/NarMojo.java:[29,8] (imports) UnusedImports: Unused import - org.apache.maven.artifact.repository.RepositoryRequest.
[WARNING] src/main/java/org/apache/nifi/NarMojo.java:[30,8] (imports) UnusedImports: Unused import - org.apache.maven.artifact.resolver.ArtifactNotFoundException.
[WARNING] src/main/java/org/apache/nifi/NarMojo.java:[31,8] (imports) UnusedImports: Unused import - org.apache.maven.artifact.resolver.ArtifactResolutionException.
[WARNING] src/main/java/org/apache/nifi/NarMojo.java:[984,17] (blocks) LeftCurly: '{' at column 17 should be on the previous line.
[WARNING] src/test/java/org/apache/nifi/extension/definition/extraction/ExtensionClassLoaderFactoryTest.java:[127] (regexp) RegexpSinglelineJava: Line has trailing whitespace.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------