The usage of Compound\LogicalAnd matching system is broken when using ESI or Hinclude subrequests.
The following exception is thrown:

Exception: Serialization of 'Closure' is not allowed at /Users/tretas/git.sources/ezsupport/ezsystems/ezpublish-kernel/eZ/Bundle/EzPublishCoreBundle/Fragment/FragmentUriGenerator.php:31

steps to reproduce:

. configure eZ Publish 5.1 with eZ Demo (it uses an hinclude subrequest)
. configure match as below

        match:
            Compound\LogicalAnd:
                -
                    matchers:
                        Map\URI:
                            the_front: true
                        Map\Host:
                            <somehost>: true
                    match: ezdemo_site_user
                -
                    matchers:
                        Map\URI:
                            the_back: true
                        Map\Host:
                            <somehost>: true
                    match: ezdemo_site_admin

Opening <somehost>/the_back will work as expected (admin interface, which is run in legacy => no subrequest)
Opening <somehost>/the_front won't work (the exception will be thrown)