Merge pull request #16436 from bradcray/skip-2-array-radix-on-cygwin
Skip this test on cygwin
[reviewed by @mppf]
With the removal of the single-task optimization in PR #16401 (which
this test relied on heavily), the running time for this test tipped
over the 5-minute mark, presumably due to the higher overhead for
allocating endcounts on Cygwin. This isn’t a particularly important
test to do for cygwin, so skip it.