Coverity plugin does not take environment variable as intermediate directory.
I tried filling ${WORKSPACE}/idir as value to intermediate directory and it filed with follwoing exception.
FATAL: Error while creating temporary directory for Coverity
10:10:41 java.lang.RuntimeException: Error while creating temporary directory for Coverity
10:10:41 at jenkins.plugins.coverity.CoverityLauncherDecorator.decorate(CoverityLauncherDecorator.java:145)
10:10:41 at hudson.Launcher.decorateFor(Launcher.java:694)
10:10:41 at jenkins.model.Jenkins.createLauncher(Jenkins.java:1443)
10:10:41 at hudson.model.AbstractBuild$AbstractBuildExecution.createLauncher(AbstractBuild.java:561)
10:10:41 at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:492)
10:10:41 at hudson.model.Run.execute(Run.java:1741)
10:10:41 at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
10:10:41 at hudson.model.ResourceController.execute(ResourceController.java:98)
10:10:41 at hudson.model.Executor.run(Executor.java:410)
10:10:41 Caused by: java.io.IOException: Failed to mkdirs: ${WORKSPACE}/idir
10:10:41 at hudson.FilePath.mkdirs(FilePath.java:1191)
10:10:41 at jenkins.plugins.coverity.CoverityLauncherDecorator.decorate(CoverityLauncherDecorator.java:136)
10:10:41 ... 8 more
10:10:41 Finished: FAILURE