Issue:

After using the pipeline `dir` on a directory which does not already exist and then immediately running the blackduck detect pipeline step it fails with a directory does not exist error:
10:07:44 java.io.IOException: Process working directory '/var/lib/jenkins/workspace/Blah/blackduck/test' doesn't exist!
10:07:44 at hudson.Proc$LocalProc.<init>(Proc.java:252)
10:07:44 at hudson.Proc$LocalProc.<init>(Proc.java:223)
10:07:44 at hudson.Launcher$LocalLauncher.launch(Launcher.java:997)
10:07:44 at hudson.Launcher$ProcStarter.start(Launcher.java:509)
10:07:44 at hudson.Launcher$ProcStarter.join(Launcher.java:520)
10:07:44 at com.synopsys.integration.jenkins.service.JenkinsRemotingService.launch(JenkinsRemotingService.java:62)
10:07:44 at com.synopsys.integration.jenkins.detect.DetectRunner.runDetect(DetectRunner.java:45)
10:07:44 at com.synopsys.integration.jenkins.detect.DetectPipelineCommands.runDetect(DetectPipelineCommands.java:27)
10:07:44 at com.synopsys.integration.jenkins.detect.extensions.pipeline.DetectPipelineStep$Execution.run(DetectPipelineStep.java:129)
10:07:44 at com.synopsys.integration.jenkins.detect.extensions.pipeline.DetectPipelineStep$Execution.run(DetectPipelineStep.java:109)
10:07:44 at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
10:07:44 at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
10:07:44 at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
10:07:44 at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
10:07:44 at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
10:07:44 at java.base/java.lang.Thread.run(Thread.java:829)
10:07:44 Finished: FAILURE
 

It appears that a remote process tries to start from the detect plugin but the directory does not exist yet or something like that.

Workaround:

Run a `sh "ls -la"` command right before the synopsis detect runs and it will fully create the directory

Fix:

I cant see the launcher code but it seems like to me that you should create a directory if it does not exist before trying to launch something there