java.io.IOException: Server returned HTTP response code: 401 for URL: https://api.github.com/user
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1876)
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474)
	at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:338)
	at org.kohsuke.github.Requester.parse(Requester.java:592)
Caused: java.io.IOException: Server returned HTTP response code: 401 for URL: https://api.github.com/user
	at sun.reflect.GeneratedConstructorAccessor227.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
	at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1926)
	at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1921)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1920)
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1490)
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1474)
	at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
	at org.kohsuke.github.Requester.parse(Requester.java:602)
Caused: org.kohsuke.github.HttpException: Server returned HTTP response code: 401, message: 'Unauthorized' for URL: https://api.github.com/user
	at org.kohsuke.github.Requester.parse(Requester.java:622)
	at org.kohsuke.github.Requester.parse(Requester.java:584)
	at org.kohsuke.github.Requester._to(Requester.java:264)
Caused: org.kohsuke.github.HttpException: {"message":"Bad credentials","documentation_url":"https://developer.github.com/v3"}
	at org.kohsuke.github.Requester.handleApiError(Requester.java:664)
	at org.kohsuke.github.Requester._to(Requester.java:285)
	at org.kohsuke.github.Requester.to(Requester.java:226)
	at org.kohsuke.github.GitHub.getMyself(GitHub.java:361)
	at org.kohsuke.github.GitHub.<init>(GitHub.java:153)
	at org.kohsuke.github.GitHubBuilder.build(GitHubBuilder.java:201)
	at org.jenkinsci.plugins.GithubAuthenticationToken.getGitHub(GithubAuthenticationToken.java:192)
	at org.jenkinsci.plugins.GithubAuthenticationToken.<init>(GithubAuthenticationToken.java:118)
	at org.jenkinsci.plugins.GithubSecurityRealm$1.authenticate(GithubSecurityRealm.java:478)
Caused: java.lang.RuntimeException
	at org.jenkinsci.plugins.GithubSecurityRealm$1.authenticate(GithubSecurityRealm.java:482)
	at jenkins.security.BasicHeaderRealPasswordAuthenticator.authenticate(BasicHeaderRealPasswordAuthenticator.java:56)
	at jenkins.security.BasicHeaderProcessor.doFilter(BasicHeaderProcessor.java:78)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
	at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
	at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:67)
	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)
	at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:90)
	at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:171)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.kohsuke.stapler.compression.CompressionFilter.doFilter(CompressionFilter.java:49)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at hudson.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:82)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.kohsuke.stapler.DiagnosticThreadNameFilter.doFilter(DiagnosticThreadNameFilter.java:30)
	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:553)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
	at org.eclipse.jetty.server.Server.handle(Server.java:499)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
	at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
	at winstone.BoundedExecutorService$1.run(BoundedExecutorService.java:77)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:748)