hudson.util.IOException2: revision check failed on http://10.10.10.2/svn/client-core/trunk
  at hudson.scm.SubversionChangeLogBuilder.buildModule(SubversionChangeLogBuilder.java:178)
  at hudson.scm.SubversionChangeLogBuilder.run(SubversionChangeLogBuilder.java:116)
  at hudson.scm.SubversionSCM.calcChangeLog(SubversionSCM.java:649)
  at hudson.scm.SubversionSCM.checkout(SubversionSCM.java:810)
  at hudson.model.AbstractProject.checkout(AbstractProject.java:1387)
  at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:676)
  at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:88)
  at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:581)
  at hudson.model.Run.execute(Run.java:1593)
  at hudson.matrix.MatrixBuild.run(MatrixBuild.java:304)
  at hudson.model.ResourceController.execute(ResourceController.java:88)
  at hudson.model.Executor.run(Executor.java:247)
  at hudson.model.OneOffExecutor.run(OneOffExecutor.java:66)
Caused by: org.tmatesoft.svn.core.SVNException: svn: E175002: OPTIONS /svn/client-core/trunk failed
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:379)
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:364)
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:352)
  at org.tmatesoft.svn.core.internal.io.dav.DAVConnection.performHttpRequest(DAVConnection.java:708)
  at org.tmatesoft.svn.core.internal.io.dav.DAVConnection.exchangeCapabilities(DAVConnection.java:628)
  at org.tmatesoft.svn.core.internal.io.dav.DAVConnection.open(DAVConnection.java:103)
  at org.tmatesoft.svn.core.internal.io.dav.DAVRepository.openConnection(DAVRepository.java:1018)
  at org.tmatesoft.svn.core.internal.io.dav.DAVRepository.getLatestRevision(DAVRepository.java:180)
  at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgRepositoryAccess.getRevisionNumber(SvnNgRepositoryAccess.java:118)
  at org.tmatesoft.svn.core.internal.wc2.SvnRepositoryAccess.getLocations(SvnRepositoryAccess.java:148)
  at org.tmatesoft.svn.core.internal.wc2.ng.SvnNgRepositoryAccess.createRepositoryFor(SvnNgRepositoryAccess.java:45)
  at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteLog.run(SvnRemoteLog.java:160)
  at org.tmatesoft.svn.core.internal.wc2.remote.SvnRemoteLog.run(SvnRemoteLog.java:35)
  at org.tmatesoft.svn.core.internal.wc2.SvnOperationRunner.run(SvnOperationRunner.java:20)
  at org.tmatesoft.svn.core.wc2.SvnOperationFactory.run(SvnOperationFactory.java:1235)
  at org.tmatesoft.svn.core.wc2.SvnOperation.run(SvnOperation.java:291)
  at org.tmatesoft.svn.core.wc.SVNLogClient.doLog(SVNLogClient.java:967)
  at org.tmatesoft.svn.core.wc.SVNLogClient.doLog(SVNLogClient.java:872)
  at hudson.scm.SubversionChangeLogBuilder.buildModule(SubversionChangeLogBuilder.java:166)
  ... 12 more
Caused by: svn: E175002: OPTIONS /svn/client-core/trunk failed
  at org.tmatesoft.svn.core.SVNErrorMessage.create(SVNErrorMessage.java:208)
  at org.tmatesoft.svn.core.SVNErrorMessage.create(SVNErrorMessage.java:154)
  at org.tmatesoft.svn.core.SVNErrorMessage.create(SVNErrorMessage.java:97)
  ... 31 more
Caused by: org.tmatesoft.svn.core.SVNException: svn: E175002: OPTIONS request failed on '/svn/client-core/trunk'
svn: E175002: connection refused by the server
  at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:64)
  at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:51)
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection._request(HTTPConnection.java:754)
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.request(HTTPConnection.java:373)
  ... 30 more
Caused by: svn: E175002: OPTIONS request failed on '/svn/client-core/trunk'
  at org.tmatesoft.svn.core.SVNErrorMessage.create(SVNErrorMessage.java:208)
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection._request(HTTPConnection.java:752)
  ... 31 more
Caused by: svn: E175002: connection refused by the server
  at org.tmatesoft.svn.core.SVNErrorMessage.create(SVNErrorMessage.java:208)
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection._request(HTTPConnection.java:499)
  ... 31 more
Caused by: java.net.ConnectException: Connection timed out
  at java.net.PlainSocketImpl.socketConnect(Native Method)
  at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
  at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
  at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
  at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
  at java.net.Socket.connect(Socket.java:529)
  at org.tmatesoft.svn.core.internal.util.SVNSocketFactory.connect(SVNSocketFactory.java:112)
  at org.tmatesoft.svn.core.internal.util.SVNSocketFactory.createPlainSocket(SVNSocketFactory.java:68)
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection.connect(HTTPConnection.java:270)
  at org.tmatesoft.svn.core.internal.io.dav.http.HTTPConnection._request(HTTPConnection.java:435)
  ... 31 more