tests: explicitly flush stderr on exit
#3042
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It has been observed in CI that the stderr output is sometimes truncated on failure. Explicitly flush the output to ensure that we can see the error messages. This has been observed on Windows which does not do a courtesy flush unlike Linux. Flush stdout, just in case.
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@swift-ci please test and merge |
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It has been observed in CI that the stderr output is sometimes truncated
on failure. Explicitly flush the output to ensure that we can see the
error messages. This has been observed on Windows which does not do a
courtesy flush unlike Linux.