Certain attributes are required on specific tags in an RSS feed. If a feed is missing one of these attributes, a MissingAttributeError is raised.
RSS does not allow for free-form tag names, so if an RSS feed contains a tag that we don’t know about, an UnknownTagError is raised.
Raised when an unexpected tag is encountered.
Attributes are in key-value form, and if there’s no value provided for an attribute, a NotAvailableValueError will be raised.
Raised when an unknown conversion error occurs.
Raised when a required variable is not set.
Raised when RubyGems is unable to load or activate a gem. Contains the name and version requirements of the gem that either conflicts with already activated gems or that RubyGems is otherwise unable to activate.
Raised when trying to activate a gem, and that gem does not exist on the system. Instead of rescuing from this class, make sure to rescue from the superclass Gem::LoadError to catch all types of load errors.
Raised when there are conflicting gem specs loaded
Raised when removing a gem with the uninstall command fails
Raised by Gem::Resolver when dependencies conflict and create the inability to find a valid possible spec for a request.
Potentially raised when a specification is validated.
Signals that a remote operation cannot be conducted, probably due to not being connected (or just not finding host).
Raised by Resolver when a dependency requests a gem for which there is no spec.
Run an instance of the gem program.
Gem::GemRunner is only intended for internal use by RubyGems itself. It does not form any public API and may change at any time for any reason.
If you would like to duplicate functionality of ‘gem` commands, use the classes they call directly.
exceptions
Raised by Timeout.timeout when the block times out.