class Error(BaseException):
    pass


class UnexpectedTravisEnvironmentError(Error):
    pass


class UnsuccessfulInputConversionError(Error):
    pass


class ConfigurationError(Error):
    pass


class FeatureValidationError(Error):
    pass


class FeatureRejected(FeatureValidationError):
    pass


class InvalidProjectStructure(FeatureValidationError):
    pass


class InvalidFeatureApi(FeatureValidationError):
    pass


class SkippedValidationTest(Error):
    pass
