[BUG} t2201.7+ Failure to Create Thread in 2.39.0-rc0

While running t2201.7 (and subsequent) for 2.39.0-rc0, I hit a condition where:

<snip>
+ test_when_finished rm trace.perf actual
+ test_config_global trace2.perfBrief 1
+ pwd
+ test_config_global trace2.perfTarget
/home/ituglib/randall/jenkins/.jenkins/workspace/Git_Pipeline/t/trash
directory.t0211-trace2-perf/trace.perf
+ test-tool trace2 101timer 5 10 3
fatal: failed to create thread[0]

was encountered, causing the test to fail. Pointers on resolving this would be helpful.

Thanks, Randall

-- Brief whoami: NonStop&UNIX developer since approximately UNIX(421664400) NonStop(211288444200000000) -- In real life, I talk too much.