}
	if crawled[url] {
		return
	}
	crawled[url] = true

	wg.Add(1)
	go func() {
		urlq <- url
	}()
}

func addProblem(url, errmsg string) {
	msg := fmt.Sprintf("Error on %s: %s (from %s)", url, errmsg, linkSources[url])
	if *verbose {
		log.Print(msg)
	}
	problems = append(problems, msg)
}

func crawlLoop() {
	for url := range urlq {
		if err := doCrawl(url); err != nil {

  <version>11-SNAPSHOT</version>
  <name>Model urls inheritance test child</name>
  <description>Most classical case: child in direct subdirectory with directory name == child artifactId</description>

  <!-- 5 inherited urls with ${project.artifactId} added to parent -->
  <url>http://www.apache.org/path/to/parent/child-artifact-id/</url>
  <scm>

  <version>11-SNAPSHOT</version>

  <name>Model urls inheritance test parent</name>
  <description>Most classical case: child in direct subdirectory with directory name == child artifactId</description>

  <modules>
    <module>child-artifact-id</module>
  </modules>

  <!-- 5 urls in the pom will be inherited with path added -->
  <url>http://www.apache.org/path/to/parent/</url>
  <scm>

                assertTrue(urlQueue.getUrl() + "=>" + url1, urlQueue.getUrl().startsWith(url1));
            }
            while ((urlQueue = urlQueueService.poll(sessionId2)) != null) {
                assertTrue(urlQueue.getUrl() + "=>" + url2, urlQueue.getUrl().startsWith(url2));
            }

            dataService.iterate(sessionId1, accessResult -> assertTrue(accessResult.getUrl().startsWith(url1)));

  <version>11-SNAPSHOT</version>
  <name>Model urls inheritance test child</name>
  <description>Flat directory structure case: module = ../child-artifact-id + child directory path == child-artifact-id</description>

  <!-- 5 inherited urls with ../${project.artifactId} added to parent -->
  <url>http://www.apache.org/path/to/parent/../inheritance/</url>
  <scm>

  <version>11-SNAPSHOT</version>

  <name>Model urls inheritance test parent</name>
  <description>Flat directory structure case: module = ../child-artifact-id + child directory path == child-artifact-id</description>

  <modules>
    <module>../inheritance</module>
  </modules>

  <!-- 5 urls in the pom will be inherited with path added -->
  <url>http://www.apache.org/path/to/parent/</url>
  <scm>

  <!-- 5 inherited urls without anything added to parent -->
  <url>http://www.apache.org/path/to/parent/</url>
  <scm child.scm.connection.inherit.append.path="false"
       child.scm.developerConnection.inherit.append.path="false"
       child.scm.url.inherit.append.path="false">
    <connection>scm:my-scm:http://domain.org/base</connection>

    <url>https://domain.org/base</url>
  </scm>
  <distributionManagement>
    <site child.site.url.inherit.append.path="false">
      <url>scp://scp.domain.org/base/</url>
    </site>
  </distributionManagement>

        .isEmpty();
  }

  @AndroidIncompatible // Android forbids null parent ClassLoader
  public void testClassPathEntries_urlClassLoader_noParent() throws Exception {
    URL url1 = new URL("file:/a");
    URL url2 = new URL("file:/b");
    URLClassLoader classloader = new URLClassLoader(new URL[] {url1, url2}, null);

        .isEmpty();
  }

  @AndroidIncompatible // Android forbids null parent ClassLoader
  public void testClassPathEntries_urlClassLoader_noParent() throws Exception {
    URL url1 = new URL("file:/a");
    URL url2 = new URL("file:/b");
    URLClassLoader classloader = new URLClassLoader(new URL[] {url1, url2}, null);