- A connection issue with the SonarQube server. Check with your network administrator.
- A user quota issue. Indeed, by default, all the plugins are downloaded to the local space of the user running the analysis. Some companies set restrictions in terms of local user space, hence the issue. The workaround is to set the 'SONAR_USER_HOME' environment variable on the machine running the analysis to a directory with enough available space to download all the plugins.
- A corrupted local cache. Delete it (or at least the failing directory) and run again the analysis.
Failed to analyse a project as another analysis on the same project seems to be running at the same time (Sonar 3.4 only)