How to solve clone git error in eclipse mars - eclipse

Question

I installed eclipse mars into my mac computer. When I try to import from my bitbucket git repository, I get an error shown below:
Egit error log is below
eclipse.buildId=4.5.1.M20150904-0015
java.version=1.8.0_66
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=tr_TR
Framework arguments: -product org.eclipse.epp.package.jee.product -product org.eclipse.epp.package.jee.product -keyring /Users/*****/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -product org.eclipse.epp.package.jee.product -data file:/Users/*****/Documents/WS/ -product org.eclipse.epp.package.jee.product -keyring /Users/*****/.eclipse_keyring -showlocation
org.eclipse.egit.ui
Error
Sat Nov 07 23:36:34 EET 2015
https://******#bitbucket.org/*****/*****.git: authentication not supported
org.eclipse.jgit.api.errors.TransportException: https://******#bitbucket.org/*****/*****.git: authentication not supported
at org.eclipse.jgit.api.LsRemoteCommand.execute(LsRemoteCommand.java:223)
at org.eclipse.jgit.api.LsRemoteCommand.call(LsRemoteCommand.java:159)
at org.eclipse.egit.core.op.ListRemoteOperation.run(ListRemoteOperation.java:99)
at org.eclipse.egit.ui.internal.clone.SourceBranchPage$8.run(SourceBranchPage.java:339)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)
Caused by: org.eclipse.jgit.errors.TransportException: https://******#bitbucket.org/*****/*****.git: authentication not supported
at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:488)
at org.eclipse.jgit.transport.TransportHttp.openFetch(TransportHttp.java:296)
at org.eclipse.jgit.api.LsRemoteCommand.execute(LsRemoteCommand.java:202)
... 4 more
I continued my works by cloning from git using sourcetree and importing project from my local directory.
Why this error occurs?
Thanks..