Comment 1 for bug 1706563

In both occurrences [1][2] the executor which times out prints "Fatal Python error: Cannot recover from stack overflow." way before the actual timeout.
We have a separate bug open for that https://bugs.launchpad.net/nova/+bug/1685333

[1] http://logs.openstack.org/77/453077/16/check/gate-nova-python35/b42eecb/console.html#_2017-07-25_16_01_58_308549
[2] http://logs.openstack.org/43/446243/44/gate/gate-nova-python35/33e584a/console.html#_2017-07-20_05_07_21_810915