The Web Part Package (WPPack) "|0" is installing assemblies into the bin directory. The bin directory is deprecated and assemblies ...

The Web Part Package (WPPack) "|0" is installing assemblies into the bin directory.  The bin directory is deprecated and assemblies installed into it are no longer partially trusted, they are granted full trust.  You should deploy the WPPack to the Global Assembly Cache (GAC) instead by specifying the -allowgacdeployment flag.  If you fully trust this WPPack, and want to continue installing it into the deprecated bin directory, specify the -allowFullTrustBinDlls parameter to suppress this warning.