Bamboo 6.8.1 intermittent checkout failure on clean repo: svn: E155004: unfinished work items

[Ken Wood]

This is happening on windows 10 bamboo build agents, but it is intermittent. Any ideas of the cause and solution?

simple	13-Jul-2020 04:51:48	Remote agent on host bld-srv-srv046.corp.e2open.com
simple	13-Jul-2020 04:51:49	Build working directory is C:\wc\FC
simple	13-Jul-2020 04:51:49	Executing build  Development - Payload and Payload Search Tests - Custom Flat File Inbound FA Correlation #114 (FC-114)
simple	13-Jul-2020 04:51:49	Starting task 'checkout selenium main code' of type 'com.atlassian.bamboo.plugins.vcs:task.vcs.checkout'
simple	13-Jul-2020 04:51:49	Build always requires a clean checkout
simple	13-Jul-2020 04:51:49	Cleaning build directory 'C:\wc\FC'
simple	13-Jul-2020 04:51:49	Checking out into C:\wc\FC
simple	13-Jul-2020 04:51:49	Updating source code to revision: 596396
simple	13-Jul-2020 04:51:49	Working directory 'C:\wc\FC' is empty. Checking out SVN URL 'http://svn01.dev.e2open.com/svn/e2open/FC/qa/platform/tools/testing/selenium'
simple	13-Jul-2020 04:53:24	Updating source code to revision: 596396
simple	13-Jul-2020 04:53:24	Existing workspace found at 'C:\wc\FC'. updating...
simple	13-Jul-2020 04:53:25	Updating source code to revision: 596396
simple	13-Jul-2020 04:53:25	Existing workspace found at 'C:\wc\FC'. updating...
error	13-Jul-2020 04:53:25	Error occurred while running Task 'checkout selenium main code(1)' of type com.atlassian.bamboo.plugins.vcs:task.vcs.checkout.
error	13-Jul-2020 04:53:25	java.lang.RuntimeException: com.atlassian.bamboo.repository.RepositoryException: Unable to retrieve source code for revision '596396', plan 'FC': svn: E155004: There are unfinished work items in 'C:\wc\FC'; run 'svn cleanup' first.