elements_shm.test_shm_live: Sometimes times out

check.gst-plugins-bad.elements_shm.test_shm_live: Failed 'Application returned 1'
       You can reproduce with: GST_CHECKS='test_shm_live' GST_PLUGIN_SYSTEM_PATH_1_0='' GST_PLUGIN_PATH_1_0='/builds/gstreamer/gst-plugins-good/gst-build/build' CK_DEFAULT_TIMEOUT='20' GST_REGISTRY='/builds/gstreamer/gst-plugins-good/gst-build/build/subprojects/gst-plugins-bad/tests/check/elements_shm.registry' GST_STATE_IGNORE_ELEMENTS='' /builds/gstreamer/gst-plugins-good/gst-build/build/subprojects/gst-plugins-bad/tests/check/elements_shm

Dumping log files on failure

Dumping contents of /builds/gstreamer/gst-plugins-good/validate-output/logs/check/gst-plugins-bad/elements_shm/test_shm_live

=================
Test name: check.gst-plugins-bad.elements_shm.test_shm_live
Command: '/builds/gstreamer/gst-plugins-good/gst-build/build/subprojects/gst-plugins-bad/tests/check/elements_shm'
=================

Running suite(s): shm
0%: Checks: 1, Failures: 0, Errors: 1
../subprojects/gst-plugins-bad/tests/check/elements/shm.c:219:E:shm2:test_shm_live:0: (after this point) Test timeout expired
Check suite shm ran in 20.002s (tests failed: 1)