NOTE: This issue is part of the "SymfonyCon 2014 Madrid Hackday" effort to add logs for every 2.7 deprecated feature. This is needed before removing those features in 3.0 version. Please, add you name in a comment of this issue if you are going to work on this.

If you need it, this Gist explains how to generate the deprecation note:

https://gist.github.com/javiereguiluz/a5514ec6cde2a63be441

The _scheme requirement has been moved to the schemes settings.

Reference: https://github.com/symfony/symfony/blob/2.7/UPGRADE-3.0.md#routing