Failed test 'we ran our before and after hooks'

[eserte]

It seems that there are rare test failures looking like this:

#   Failed test 'we ran our before and after hooks'
#   at t/hook_run.t line 30.
#          got: '2'
#     expected: '1'
# Looks like you failed 1 test of 6.
t/hook_run.t ......... 
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/6 subtests 

A complete list of test reports with this failure may be found here (please sort by the 3rd column):
http://analysis.cpantesters.org/reports_by_field?distv=Functional-Utility-1.02;field=qr%3A%28Failed%20test%5Cs%2B%5CS%2B.%2A%29