Errors

Carton’s own errors subclass Carton::Error, a StandardError. Every Box shares these classes, so rescue Carton::Error works in the app and inside any Carton.

Error	Raised when
Carton::ImportError	Boxes are disabled (run with RUBY_BOX=1), the target is a file inside a Carton, a Carton imports itself, or a shared Carton was built against other gem versions
Carton::ExportError	export is called twice in one Entrypoint or given a Symbol, or a Bare Carton Helper would hide a Carton::Namespace method
Carton::GemfileNotFound	Carton.setup_bundle finds no Gemfile

Otherwise Carton raises what Ruby would: LoadError for a missing import target, and ArgumentError for export without exactly one value.