The Coverity plugin is wrapping all pre-build steps with cov-build
causing the pre-build steps to fail. It is also wrapped spawned
processes from the perforce plugin causing the p4 sync to fail:

[SmashIT Trunk Metrics] $ "C:\Program Files\Coverity\Coverity Static
Analysis\bin\cov-build" --dir coverity "C:\Program Files\Perforce
\p4.exe" workspace -o smashit_trunk_metrics

• • • Perforce client workspace 'smashit_trunk_metrics' doesn't exist.

I know the workspace exists, the build was working before enable the
coverity plugin. It also does this to the TFS plugin as well which causes unecessary warnings in the build output. Additionally, this interaction with the MSBuild plugin causes the build to fail due to the command line arguments.

Bottom line, the Coverity plugin does not play nice with other plugins.