in src/main/java/org/apache/maven/plugins/clean/Cleaner.java [302:312]
public FileVisitResult visitFileFailed(Path file, IOException failure) throws IOException {
if (logger.isWarnEnabled()) {
logger.warn("Failed to visit " + file, failure);
}
failureCount++;
nonEmptyDirectoryLevels.set(currentDepth); // Remember that the directory will not be empty.
if (failOnError) {
throw failure;
}
return FileVisitResult.CONTINUE;
}