No support for "arguments" key in the database
At version 2.3.0 Bear switched from generating "command" to "arguments" in the database.
Therefore cc_driver.pl can't understand its output anymore.
The changes are rather more extensive than that -- unfortunately the "arguments" output is in a different format, and Bear no longer supports the "command" format. (See https://github.com/rizsotto/Bear/issues/196 for more info).
What this means is that the output can no longer be parsed as a simple string, but requires some level of JSON support.
So, there's a bit of work to support the "arguments" format. I'll try to get to that when I have time, but if you want to submit a PR that would be welcome too ;-)
BTW, another possibility is to use a version of BEAR earlier than 2.3.0