at org.sonar.core.util.DefaultHttpDownloader.failToDownload(DefaultHttpDownloader.java:159) ~[sonar-core-5.2.jar:na]
at org.sonar.core.util.DefaultHttpDownloader.download(DefaultHttpDownloader.java:154) ~[sonar-core-5.2.jar:na]
at org.sonar.server.plugins.PluginDownloader.downloadRelease(PluginDownloader.java:160) ~[sonar-server-5.2.jar:na]
at org.sonar.server.plugins.PluginDownloader.download(PluginDownloader.java:134) ~[sonar-server-5.2.jar:na]
... 380 common frames omitted
Caused by: java.net.SocketTimeoutException: connect timed out
at java.net.TwoStacksPlainSocketImpl.socketConnect(Native Method) ~[na:1.7.0_65]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339) ~[na:1.7.0_65]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200) ~[na:1.7.0_65]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182) ~[na:1.7.0_65]
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.7.0_65]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.7.0_65]
at java.net.Socket.connect(Socket.java:579) ~[na:1.7.0_65]
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:618) ~[na:1.7.0_65]
at sun.net.NetworkClient.doConnect(NetworkClient.java:175) ~[na:1.7.0_65]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:432) ~[na:1.7.0_65]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:527) ~[na:1.7.0_65]
at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:275) ~[na:1.7.0_65]
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:191) ~[na:1.7.0_65]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932) ~[na:1.7.0_65]
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177) ~[na:1.7.0_65]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(HttpsURLConnectionImpl.java:153) ~[na:1.7.0_65]
at org.sonar.core.util.DefaultHttpDownloader$BaseHttpDownloader$HttpInputSupplier.getInput(DefaultHttpDownloader.java:331) ~[sonar-core-5.2.jar:na]
at org.sonar.core.util.DefaultHttpDownloader$BaseHttpDownloader$HttpInputSupplier.getInput(DefaultHttpDownloader.java:288) ~[sonar-core-5.2.jar:na]
at com.google.common.io.ByteStreams$3.openStream(ByteStreams.java:1020) ~[guava-17.0.jar:na]
at com.google.common.io.ByteSource.copyTo(ByteSource.java:254) ~[guava-17.0.jar:na]
at com.google.common.io.Files.copy(Files.java:384) ~[guava-17.0.jar:na]
at org.sonar.core.util.DefaultHttpDownloader.download(DefaultHttpDownloader.java:151) ~[sonar-core-5.2.jar:na]
... 382 common frames omitted