postfix installation problem in PHP 5.5 test suite

[Synchro]

I don't know if anyone else noticed, but the test suite is currently failing when running tests under PHP 5.5. The error is this:

You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
 libodbc1 : Depends: libodbc2 (= 2.3.9-5) but 2.3.9-5ubuntu0.1 is to be installed
 libodbccr2 : Depends: libodbc2 (= 2.3.9-5) but 2.3.9-5ubuntu0.1 is to be installed
 unixodbc-dev : Depends: libodbccr2 (= 2.3.9-5ubuntu0.1) but 2.3.9-5 is to be installed
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).
Failed to stop postfix.service: Unit postfix.service not loaded.

I have already added --fix-broken to the package installation line, but it doesn't help.

So, if anyone has time available and would like to contribute something useful, please have a go at fixing this!