java + gtk3

[Vasilisc]

My snapcraft.yaml
   java-files:
     plugin: jdk
     source: .

   project-files:
    plugin: copy
    files:
     run.sh: usr/bin/run.sh
     opt/* : /opt/
    after: [desktop/gtk3]

Raise error

Parts 'desktop/gtk3' and 'java-files' have the following file paths in 
common which have different contents:
usr/share/pkgconfig/shared-mime-info.pc
-------------------

$ apt-cache policy snapd
snapd:
   Installed: 2.0.10
   Candidate: 2.0.10
   Version table:
  *** 2.0.10 500
         500 http://fi.archive.ubuntu.com/ubuntu xenial-updates/main 
amd64 Packages
         100 /var/lib/dpkg/status
      2.0.2 500
         500 http://fi.archive.ubuntu.com/ubuntu xenial/main amd64 Packages

I use apt-cacher-ng for saving time.
-- 
Best regards,
vasilisc