You're viewing the documentation for the experimental version of Vagrant (the 1.x series). The current stable series is 1.0.x and the documentation can be found here. You can learn more about the Vagrant versioning scheme here.
If you run into issues with Vagrant, enabling logging can divulge helpful information in order to troubleshoot your issues. To enable logging, the VAGRANT_LOG environmental variable must be set to the desired log level name, such as INFO or DEBUG. For example, on linux systems:
$ VAGRANT_LOG=INFO vagrant upOn Windows, you must use set to set an environmental variable:
> set VAGRANT_LOG=INFO
> vagrant upUsers are encouraged to start with the INFO level, as it adds a significant amount of additional information over the default output without becoming unreadable.
If you plan on submitting a bug report or an issue, please attach DEBUG level log output of the command that fails.