Random locking failure in unit test

java -version

java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

test failure:

Failed tests:
  DefaultPathLockManagerTest.deleteShouldBlockAccessToDescendents:149 Reading a path that is being deleted should block until delete is complete!

Tests run: 92, Failures: 1, Errors: 0, Skipped: 0

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] Fedora Commons 4 :: Parent POM ..................... SUCCESS [  0.465 s]
[INFO] Fedora Commons 4 ................................... SUCCESS [ 10.364 s]
[INFO] Fedora Repository BOM .............................. SUCCESS [  0.300 s]
[INFO] Fedora Repository JCR BOM .......................... SUCCESS [  0.251 s]
[INFO] Fedora Repository BOMs ............................. SUCCESS [  0.297 s]
[INFO] Fedora Repository Kernel API ....................... SUCCESS [ 29.743 s]
[INFO] Fedora Repository Metrics Module ................... SUCCESS [ 14.084 s]
[INFO] Fedora Repository Configurations Module ............ SUCCESS [  0.920 s]
[INFO] Fedora Repository Kernel Implementation (ModeShape)  SUCCESS [01:01 min]
[INFO] Fedora Event Serialization ......................... SUCCESS [ 16.169 s]
[INFO] Fedora Repository JMS Module ....................... SUCCESS [ 32.598 s]
[INFO] Fedora Repository HTTP Commons Module .............. SUCCESS [ 35.524 s]
[INFO] Fedora Repository Authorization Commons Module ..... SUCCESS [ 48.413 s]
[INFO] Fedora Repository HTTP API Module .................. FAILURE [ 13.230 s]
[INFO] Fedora Repository Deployable Web Application ....... SKIPPED
[INFO] Fedora Repository LDP integration tests Module ..... SKIPPED
[INFO] Fedora Repository RDF integration tests Module ..... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 04:25 min
[INFO] Finished at: 2016-10-13T16:51:51-04:00
[INFO] Final Memory: 131M/534M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.18.1:test (default-test) on project fcrepo-http-api: There are test failures.
[ERROR]
[ERROR] Please refer to /Users/bseeger/Projects/fedora/fcrepo4/fcrepo-http-api/target/surefire-reports for the individual test results.
[ERROR] -> [Help 1]