This is an autogenned package.  When trying to upgrade from v.0.99.2 to 0.99.4, the package failed in install phase due to a missing file, which probably has been removed in the latest update.

A complete build.log is attached. Here is the relevant error message:

FileNotFoundError: [Errno 2] No such file or directory: b'share/appdata/shutter.appdata.xml'
 * ERROR: x11-misc/shutter-0.99.4::desktop-kit failed (install phase):
 *   doins failed

This issue first appeared in v.0.99.4 with a change committed yesterday (March 10th) c3dec937 , where share/appdata/shutter.appdata.xml was moved and renamed to share/appinfo/shutter.appinfo.xml.