I have a machine that boots to  29.20181113.0
Running `rpm-ostree update` 
 starts
 runs
 reports  ...:
'perf; interrupt took  too long(5943 > 5767), lowering kernel.perf_event_max_sample_rate to 33000'

 Seems the process gets to 99% (4612/4616) 
 and hangs.   I will plan to let it go for ~1hour then 'poweroff'

 What details can I provide beyond the above?  What is next?

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