ANT SVN mkDir is blocking against new SVN version (in Teamcity)

We have a Teamcity server running some very old ANT builds.

Summary of the build process:

1. Teamcity gets the source code from svn
2. Teamcity starts ant with the build file
3. ANT does the build magic
4. ANT uses svnant.jar to create a version tag

After am upgrade of the SVN verion (it was something old like 1.6.x) to a new SVN version, the step 4 is always blocking (The teamcity server shows building step "mkdir" forever)

I assume we have

• either a version problem (svnant.jar is not supporting new SVN server)
• or we have some kind off SSL access problem (the new SVN server is no longer supporting old SSL version and svnant.jar is not supporting new SSL)

We already updated the Teamcity server to a new version, but this did not change the problem.

Somebody has some ideas what the problem/solution is?

BUILD-XML

<?xml version="1.0" encoding="ISO-8859-1" ?>
<project name="db Build XML" basedir="." default="cleanup">

    <typedef resource="org/tigris/subversion/svnant/svnantlib.xml" classpath="svnant.jar" />

    <!-- START ############# Define properties ############# -->

    <!-- svn server properties -->
    <property name="svnRootDatabaseLib" value="${build.repository.databaseLib.path}" />
    <property name="svnRootJavaLib" value="${build.repository.javalib.path}" />
    <property name="svnTags" value="${build.tag.path}" />
    <property name="svnUser" value="${build.repository.user}" />
    <property name="svnPwd" value="${build.repository.password}" />
    <property name="svnHistoryRoot" value="${build.history.repository.path}" />

    <!-- temp directory properties -->

    <property name="tmpDir" value="../tmpDir" />

    <property name="releaseTmpDir" value="../releaseTmpDir" />


    <!-- packages directory properties -->
    <property name="guiDir" value="../gui" />
    <property name="mainDir" value="../main" />

    <property name="dbDir" value="../" />

    <property name="manifestTmpFile" value="${releaseTmpDir}/MANIFEST.MF" />

    <property name="nant.onfailure" value="cleanup" />

    <property name="build.type" value="buildserver" />
    <tstamp>
        <format property="TODAY" pattern="dd.MM.yyyy HH:mm:ss" />
    </tstamp>

    <!-- START ############# init ############# -->

    <target name="init">

        <fail unless="build.repository.path" message="$${build.repository.path} is not defined" />
        <fail unless="build.tag.path" message="$${build.tag.path} is not defined" />
        <fail unless="build.repository.user" message="$${build.repository.user} is not defined" />
        <fail unless="build.repository.password" message="$${build.repository.password} is not defined" />
        <fail unless="build.sic.version" message="$${build.sic.version} is not defined" />

        <mkdir dir="${releaseTmpDir}" />
        <mkdir dir="${releaseTmpDir}/mg" />

        <manifest file="${manifestTmpFile}">
            <attribute name="Build-Version" value="${build.number}" />
            <attribute name="Build-Type" value="${build.type}" />
            <attribute name="Build-Name" value="Java Library" />
            <attribute name="Build-Date" value="${TODAY}" />
            <attribute name="Build-Environment" value="JDK ${java.version}" />
            <attribute name="Build-SIC-Version" value="${build.sic.version}" />
            <attribute name="Build-Tag-Path" value="${svnTags}/${build.number}" />
            
        </manifest>

    </target>


    <!-- START ############# create packages ############# -->

    <target name="dbJar" depends="init">

        <delete dir="${tmpDir}" />
        <mkdir dir="${tmpDir}" />

        <javac srcdir="${dbDir}/sources" destdir="${tmpDir}" compiler="modern" nowarn="true" debug="true" optimize="true" deprecation="false">
            <classpath>
                <fileset dir="${dbDir}/resources/lib">
                    <include name="**/*.jar" />
                </fileset>
                <fileset dir="${releaseTmpDir}">
                    <include name="**/*.jar" />
                </fileset>
            </classpath>
        </javac>

        <!-- Copy conf dir to tmp -->
        <copy todir="${tmpDir}/config">
            <fileset dir="${dbDir}/resources/config" />
        </copy>

        <jar encoding="UTF8" destfile="${releaseTmpDir}/mg/databaseLib.jar" basedir="${tmpDir}" includes="**" compress="true" manifest="${manifestTmpFile}" />

    </target>


    <!-- START ############# Custom Tasks ############# -->

    <!-- Copy additional files -->
    <target name="copyToRelease" depends="dbJar">

        <!-- EXT dir for JAR files -->
        <copy preservelastmodified="true" todir="${releaseTmpDir}/ext">
            <fileset dir="../resources/lib">
                <include name="**/*" />
                <exclude name="junit-4.11.jar"/>
            </fileset>
        </copy>
    </target>

    <!-- Label version in SVN -->
    <target name="labelVersion" depends="copyToRelease">

        <svn svnkit="true" username="${svnUser}" password="${svnPwd}">
            <mkdir url="${svnTags}/${build.number}" message="INTERNAL db subdirectory created" />

                <!-- Label databaseLib -->
                <copy srcUrl="${svnRootDatabaseLib}" destUrl="${svnTags}/${build.number}/db" message="INTERNAL New tag ${build.number}" />
                <!-- Label JavaLib -->
                <copy srcUrl="${svnRootJavaLib}" destUrl="${svnTags}/${build.number}/javalib" message="INTERNAL New tag ${build.number}" />
            
        </svn>

    </target>


    <target name="cleanup" depends="labelVersion">

        <delete dir="${tmpDir}" failonerror="false" />
        <delete file="${manifestTmpFile}" failonerror="false" />
    </target>


    <!-- END ############# create packages ############# -->

</project>

Thread dump:

2020-07-10 16:32:25
Full thread dump Java HotSpot(TM) Client VM (25.60-b23 mixed mode):

"Timer-0" #10 daemon prio=5 os_prio=0 tid=0x25e43000 nid=0x1128 in Object.wait() [0x2541f000]
   java.lang.Thread.State: TIMED_WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    at java.util.TimerThread.mainLoop(Timer.java:552)
    - locked <0x0fe64698> (a java.util.TaskQueue)
    at java.util.TimerThread.run(Timer.java:505)

"Thread-0" #8 daemon prio=5 os_prio=0 tid=0x25ec3800 nid=0x70 in Object.wait() [0x27b4f000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    - waiting on <0x0fe64820> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
    - locked <0x0fe64820> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
    at org.tmatesoft.svn.core.javahl.SVNClientImplTracker.run(SVNClientImplTracker.java:65)
    at java.lang.Thread.run(Thread.java:745)

"Service Thread" #7 daemon prio=9 os_prio=0 tid=0x24edf400 nid=0x6b0 runnable [0x00000000]
   java.lang.Thread.State: RUNNABLE

"C1 CompilerThread0" #6 daemon prio=9 os_prio=2 tid=0x24eb7c00 nid=0xa5c waiting on condition [0x00000000]
   java.lang.Thread.State: RUNNABLE

"Attach Listener" #5 daemon prio=5 os_prio=2 tid=0x24eb6800 nid=0x13c0 waiting on condition [0x00000000]
   java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" #4 daemon prio=9 os_prio=2 tid=0x24e83c00 nid=0xe9c runnable [0x00000000]
   java.lang.Thread.State: RUNNABLE

"Finalizer" #3 daemon prio=8 os_prio=1 tid=0x24e7fc00 nid=0x1388 in Object.wait() [0x2523f000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
    - locked <0x0f4d4168> (a java.lang.ref.ReferenceQueue$Lock)
    at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
    at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)

"Reference Handler" #2 daemon prio=10 os_prio=2 tid=0x24e79c00 nid=0x1258 in Object.wait() [0x2515f000]
   java.lang.Thread.State: WAITING (on object monitor)
    at java.lang.Object.wait(Native Method)
    at java.lang.Object.wait(Object.java:502)
    at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)
    - locked <0x0f4d4308> (a java.lang.ref.Reference$Lock)

"main" #1 prio=5 os_prio=0 tid=0x00dd5800 nid=0x148 runnable [0x00fbe000]
   java.lang.Thread.State: RUNNABLE
    at java.io.WinNTFileSystem.getLastModifiedTime(Native Method)
    at java.io.File.lastModified(File.java:943)
    at org.tmatesoft.svn.core.internal.wc.SVNConfigFile.load(SVNConfigFile.java:219)
    at org.tmatesoft.svn.core.internal.wc.SVNConfigFile.getProperties(SVNConfigFile.java:52)
    at org.tmatesoft.svn.core.internal.wc.SVNCompositeConfigFile.getProperties(SVNCompositeConfigFile.java:32)
    at org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager.getHostProperties(DefaultSVNAuthenticationManager.java:140)
    at org.tmatesoft.svn.core.internal.wc.DefaultSVNAuthenticationManager.getProxyManager(DefaultSVNAuthenticationManager.java:89)
    at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.connect(HTTPConnection.java:147)
    at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:323)
    at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:273)
    at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:261)
    at org.tmatesoft.svn.core.internal.io.dav.DAVConnection.exchangeCapabilities(DAVConnection.java:516)
    at org.tmatesoft.svn.core.internal.io.dav.DAVConnection.open(DAVConnection.java:98)
    at org.tmatesoft.svn.core.internal.io.dav.DAVRepository.openConnection(DAVRepository.java:999)
    at org.tmatesoft.svn.core.internal.io.dav.DAVRepository.getCommitEditorInternal(DAVRepository.java:1129)
    at org.tmatesoft.svn.core.io.SVNRepository.getCommitEditor(SVNRepository.java:2474)
    at org.tmatesoft.svn.core.wc.SVNCommitClient.doMkDir(SVNCommitClient.java:467)
    at org.tmatesoft.svn.core.javahl.SVNClientImpl.mkdir(SVNClientImpl.java:834)
    at org.tigris.subversion.svnclientadapter.javahl.AbstractJhlClientAdapter.mkdir(AbstractJhlClientAdapter.java:2341)
    at org.tigris.subversion.svnclientadapter.javahl.AbstractJhlClientAdapter.mkdir(AbstractJhlClientAdapter.java:906)
    at org.tigris.subversion.svnant.commands.Mkdir.execute(Unknown Source)
    at org.tigris.subversion.svnant.commands.SvnCommand.executeCommand(Unknown Source)
    at org.tigris.subversion.svnant.SvnTask.execute(Unknown Source)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    at org.apache.tools.ant.Task.perform(Task.java:348)
    at org.apache.tools.ant.Target.execute(Target.java:357)
    at org.apache.tools.ant.Target.performTasks(Target.java:385)
    at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
    at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
    at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
    at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
    at org.apache.tools.ant.Main.runBuild(Main.java:758)
    at org.apache.tools.ant.Main.startAnt(Main.java:217)
    at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
    at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)

"VM Thread" os_prio=2 tid=0x24e75800 nid=0x3ec runnable 

"VM Periodic Task Thread" os_prio=2 tid=0x24ee3000 nid=0x814 waiting on condition 

JNI global references: 256