[CRIU] ✗ travis-ci: failure for Docker build: switch to xenial images

[Patchwork]

== Series Details ==

Series: Docker build: switch to xenial images
URL   : https://patchwork.criu.org/series/669/
State : failure

== Logs ==

For more details see: https://travis-ci.org/criupatchwork/criu/builds/167305774