eclipse安装插件报错
An error occurred while collecting items to be installed session context was:(profile=D__Program Files_eclipse_testing-mars_eclipse, phase=org.eclipse.equinox.internal.p2.engine.phases.Collect, operand=, action=).
Unable to read repository at https://dl.bintray.com/fabioz/pydev/5.1.2/plugins/org.python.pydev.jython_5.1.2.201606231256.jar.
Connection reset
原因：插件的md5值和官方给定的不一致，说明这个插件不是官方给定的版本
解决办法：安装时，把“Contact all update sites during install to find required software”这个勾去掉