cucumber/cucumber — pull request #203 by jmerrifield (2011-12-12 16:06:50+00:00)
Title: Fix frozen string issue introduced in #159

When the HTML Formatter tries to append the class name of an exception to the message, if the message is frozen then a 'Cannot modify frozen string' exception is raised. This occurs when an exception has a frozen `message` attribute (e.g. in the case of `Timeout::Error`).

This pull request replaces the message variable with a concatenated string rather than attempting to append to it in-place.