buildbot exception in on eagle-master-docs

[buildbot]

The Buildbot has detected a build exception on builder eagle-master-docs while 
building . Full details are available at:
    https://ci.apache.org/builders/eagle-master-docs/builds/1083

Buildbot URL: https://ci.apache.org/

Buildslave for this Build: bb_slave8_ubuntu

Build Reason: The Nightly scheduler named 'eagleDocsNightly' triggered this 
build
Build Source Stamp: [branch master] HEAD
Blamelist: 

BUILD FAILED: exception git

Sincerely,
 -The Buildbot