When force syncing, we sporadically hit this error (sometimes it works just fine, even on the same node):
12:14:17 p4 sync -q d:\myBuild/...#none
{{12:14:17 }}
{{12:14:17 }}
12:14:17 ... rm -rf d:\myBuild
{{12:14:17 }}
12:15:16 P4 Task: attempt: 1
12:15:19 P4 Task: failed: java.io.IOException: Failed to list contents of d:\myBuild\src\Tools\Python\2.7.13\mac\Python.framework\Versions\2.7\Headers
Note that this file is a symlink on a Windows machine (not sure if that's relevant).
Also note that the entire workspace is empty after the failure, with the exception of this one file.
Unable to reproduce. If you are a paying Perforce customer please contact support @perforce.com so we can look at the individual files and investigate further.