"Ignoring Provides line" warning in APT fixed

For the last week, users of apt.mopidy.com have probably seen the following when running apt-get update on a system where APT doesn’t supported versioned Provides yet, like Raspbian Wheezy.

W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-max 
W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-min 
W: Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-max
W: Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-min

After discussing with the python-cffi maintainer, I’ve uploaded a new backport of the python-cffi package to apt.mopidy.com, without the Provides line that caused the warning.

To get rid of the warning on your system, run:

sudo apt-get update
sudo apt-get upgrade

Exactly the same problem. But, update (and upgrade) didn’t help.

W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-max
W: Ignoring Provides line with DepCompareOp for package python-cffi-backend-api-min
W: Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-max
W: Ignoring Provides line with DepCompareOp for package python3-cffi-backend-api-min
W: You may want to run apt-get update to correct these problems

Are you actually using apt.mopidy.com? What operating system and version are you using?