[CRIU] ✗ travis-ci: failure for zdtm.py: call clean_tests_root() from one process only

[Patchwork]

== Series Details ==

Series: zdtm.py: call clean_tests_root() from one process only
URL   : https://patchwork.criu.org/series/522/
State : failure

== Logs ==

For more details see: https://travis-ci.org/criupatchwork/criu/builds/156646284