Turn on warnings for nightly for tests that took > 60 seconds to execute

[ok'd by sungeunchoi and thomasvandoren]

I'm using this to try to find stress tests that need guard pages turned off and
codes that may need timeouts added because they now take longer with guard
pages. This is going to make testing noisy for the next two days.

It will not report results for valgrind

Note this is temporary and will only run for tonight.