[limb-dev] BUILD ERROR: Project 'tree' build 'unfinished'

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BUILD ERROR

Project 'tree' build 'unfinished'

The build log is as follows

================= BUILD.LOG =================
Starting fresh build of 'tree' project...

Updating working copy

Executing 'svn up --non-interactive .../wc/tree'...
svn: Can't open file '...wc/tree/src/exception/.svn/lock': Permission denied

finished.

ERROR: 'svn up --non-interactive .../wc/tree' execution failed, return status is '1'
Build had errors!

ERROR: 'svn up --non-interactive .../wc/tree' execution failed, return status is '1'