package: wxwidgets3.0 version: 3.0.5.1+dfsg-2 As heading says: The wx-common package installs the /usr/bin/wxrc binary which is an -- wx-common is a multi-arch package assumed to be installable in parallel for different arches.
The error is indeed flagged as such by lintian. I see no reason to handle this before the upcoming upstream 3.2 release. I understand that this could have been filed against the wx-common package. Choosing the source package since I guess the solution is about updating d/control somehow.