t/01_JobQueue/11_last_errorcode.t failures

[eserte]

The test suite fails on some of my smokers (linux, freebsd, various perl versions):

#   Failed test 'the jobs added'
#   at t/01_JobQueue/11_last_errorcode.t line 252.

#   Failed test 'the jobs added'
#   at t/01_JobQueue/11_last_errorcode.t line 275.

#   Failed test 'exception'
#   at t/01_JobQueue/11_last_errorcode.t line 287.

#   Failed test 'E_JOB_DELETED'
#   at t/01_JobQueue/11_last_errorcode.t line 288.
#          got: '0'
#     expected: '5'
# Looks like you failed 4 tests of 43.
t/01_JobQueue/11_last_errorcode.t ....... 
Dubious, test returned 4 (wstat 1024, 0x400)
Failed 4/43 subtests