message: Disable PID namespace usage
  Using pid namespaces doesn't work in a MT environment. See
  comment in libminijail.c for details.
diff: @@ -169,8 +169,12 @@ impl Process {
  jail.change_uid(SYSTEM_UID);
  // Configure PID
  jail.change_gid(SYSTEM_GID);
  +
  + // TODO: Do not use pid namespace because of multithreadding
  + // issues discovered by minijail. See libminijail.c for details.
  // Make the process enter a pid namespace
  - jail.namespace_pids();
  + //jail.namespace_pids();
  +
  // Make the process enter a vfs namespace
  jail.namespace_vfs();
  // Set no_new_privs. See </kernel/seccomp.c> and </kernel/sys.c>
  