#   Failed test 'not ok #tcp listen failed: Cannot assign requested address
# '
#   at ./t/testlib.pl line 39.
# Tests were run but no plan was declared and done_testing() was not seen.
# Looks like your test exited with 1 just after 1.
#t/plain_upgrade_downgrade.t ....... 
#Dubious, test returned 1 (wstat 256, 0x100)
#Failed 1/1 subtests 
#Bailout called.  Further testing stopped:  cannot listen on localhost: Cannot assign requested address
#FAILED--Further testing stopped: cannot listen on localhost: Cannot assign requested address
#make: *** [Makefile:880: test_dynamic] Error 255
#==> ERROR: A failure occurred in check().
#    Aborting...
SKIP_CHECK=1