}

                override fun visitFileFailed(file: Path?, exc: IOException?) =
                    FileVisitResult.TERMINATE

                override fun postVisitDirectory(dir: Path?, exc: IOException?) =
                    FileVisitResult.CONTINUE

                private
                fun Path.isClassFilePath() =
                    toString().endsWith(".class")

                logger.warn("I/O exception on {}", file, e);
            }
            return FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult postVisitDirectory(final Path dir, final IOException e) throws IOException {
            if (e != null) {
                logger.warn("I/O exception on {}", dir, e);
            }
            deleteEmptyDirectory(dir);