Missing $SNAP/usr/lib/${SNAPCRAFT_ARCH_TRIPLET}/ means a crash with:
2020-06-01T08:40:54Z scummvm.daemon[7213]: + exec /snap/scummvm/3860/bin/scummvm -f
2020-06-01T08:40:55Z scummvm.daemon[7213]: /snap/scummvm/3860/bin/scummvm: error while loading shared libraries: libgtk-3.so.0: cannot open shared object file: No such file or directory
Missing $SNAP/usr/lib/${SNAPCRAFT_ARCH_TRIPLET}/ means a crash with: