[mcserver@vm spigotServ]$ java -jar BuildTools.jar
Loading BuildTools version: git-BuildTools-1847da7-45 (#45)
BuildTools
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Starting clone of https://hub.spigotmc.org/stash/scm/spigot/builddata.git to BuildData
Exception in thread "main" org.eclipse.jgit.api.errors.TransportException: https://hub.spigotmc.org/stash/scm/spigot/builddata.git: cannot open git-upload-pack
        at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:139)
        at org.eclipse.jgit.api.CloneCommand.fetch(CloneCommand.java:187)
        at org.eclipse.jgit.api.CloneCommand.call(CloneCommand.java:127)
        at org.spigotmc.builder.Builder.clone(Builder.java:619)
        at org.spigotmc.builder.Builder.main(Builder.java:189)
Caused by: org.eclipse.jgit.errors.TransportException: https://hub.spigotmc.org/stash/scm/spigot/builddata.git: cannot open git-upload-pack
        at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:524)
        at org.eclipse.jgit.transport.TransportHttp.openFetch(TransportHttp.java:309)
        at org.eclipse.jgit.transport.FetchProcess.executeImp(FetchProcess.java:136)
        at org.eclipse.jgit.transport.FetchProcess.execute(FetchProcess.java:122)
        at org.eclipse.jgit.transport.Transport.fetch(Transport.java:1138)
        at org.eclipse.jgit.api.FetchCommand.call(FetchCommand.java:130)
        ... 4 more
Caused by: javax.net.ssl.SSLException: java.security.ProviderException: java.security.KeyException
        at sun.security.ssl.Alerts.getSSLException(Alerts.java:208)
        at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1916)
        at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1874)
        at sun.security.ssl.SSLSocketImpl.handleException(SSLSocketImpl.java:1857)
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1378)
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1355)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1302)
        at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)
        at org.eclipse.jgit.transport.http.JDKHttpConnection.getResponseCode(JDKHttpConnection.java:98)
        at org.eclipse.jgit.util.HttpSupport.response(HttpSupport.java:168)
        at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:475)
        ... 9 more
Caused by: java.security.ProviderException: java.security.KeyException
        at sun.security.ec.ECKeyPairGenerator.generateKeyPair(ECKeyPairGenerator.java:146)
        at java.security.KeyPairGenerator$Delegate.generateKeyPair(KeyPairGenerator.java:704)
        at sun.security.ssl.ECDHCrypt.<init>(ECDHCrypt.java:78)
        at sun.security.ssl.ClientHandshaker.serverKeyExchange(ClientHandshaker.java:717)
        at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:278)
        at sun.security.ssl.Handshaker.processLoop(Handshaker.java:913)
        at sun.security.ssl.Handshaker.process_record(Handshaker.java:849)
        at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1035)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1344)
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1371)
        ... 18 more
Caused by: java.security.KeyException
        at sun.security.ec.ECKeyPairGenerator.generateECKeyPair(Native Method)
        at sun.security.ec.ECKeyPairGenerator.generateKeyPair(ECKeyPairGenerator.java:126)
        ... 27 more