[ERROR] Tests run: 18, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 87.18 s <<< FAILURE! -- in hudson.plugins.ws_cleanup.CleanupTest
[ERROR] hudson.plugins.ws_cleanup.CleanupTest.reportCleanupCommandFailure -- Time elapsed: 1.814 s <<< FAILURE!
java.lang.AssertionError: 

Expected: a string containing "mkdir: cannot create directory"
     but: was "Legacy code started this job.  No cause information is available
Running as SYSTEM
Building in workspace /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut
[WS-CLEANUP] Deleting project workspace...
ERROR: Cleanup command 'mkdir /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut/post-build' failed with code 1:
mkdir: /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut/post-build: File exists
ERROR: Cleanup command 'mkdir /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut/pre-build' failed with code 1:
mkdir: /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut/pre-build: File exists
[WS-CLEANUP] Done
[WS-CLEANUP] Deleting project workspace...
ERROR: Cleanup command 'mkdir /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut/post-build' failed with code 1:
mkdir: /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut/post-build: File exists
ERROR: Cleanup command 'mkdir /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut/pre-build' failed with code 1:
mkdir: /Users/alex/Desktop/ws-cleanup-plugin/target/tmp/j h1027031889427895098/workspace/sut/pre-build: File exists
[WS-CLEANUP] done
Finished: SUCCESS
"
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)
	at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:6)
	at org.jvnet.hudson.test.JenkinsRule.assertLogContains(JenkinsRule.java:1518)
	at hudson.plugins.ws_cleanup.CleanupTest.reportCleanupCommandFailure(CleanupTest.java:242)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.jvnet.hudson.test.JenkinsRule$1.evaluate(JenkinsRule.java:607)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.lang.Thread.run(Thread.java:833)