[WinCairo] run-bindings-tests is timing out in some bots This issue is happening on wincairo-wkl-release-tests-02, but on wincairo-wkl-release-tests-01. For example, https://build.webkit.org/builders/WinCairo%2064-bit%20WKL%20Release%20%28Tests%29/builds/2426/steps/bindings-generation-tests/logs/stdio > command timed out: 1200 seconds without output running ['python', './Tools/Scripts/run-bindings-tests'], attempting to kill > program finished with exit code 1 > elapsedTime=1200.300000 If I set a env var PYTHONUNBUFFERED=1 in wincairo-wkl-release-tests-02, it passed. https://build.webkit.org/builders/WinCairo%2064-bit%20WKL%20Release%20%28Tests%29/builds/2430/steps/bindings-generation-tests/logs/stdio > PYTHONUNBUFFERED=1 (...) > All tests PASS! > program finished with exit code 0 > elapsedTime=2069.417000
BuildBot kills run-bindings-tests if it outputs nothing for 20 minutes. run-bindings-tests runs very slowly in WinCairo Docker. It takes more than 30 minutes to complete. And, Python buffers the progress output.
Created attachment 354073 [details] Patch
Seems reasonable to me.
Geoff, Filip, any objection to adding this flush? Seems reasonable.
Review, please.
Comment on attachment 354073 [details] Patch Clearing flags on attachment: 354073 Committed r238081: <https://trac.webkit.org/changeset/238081>
All reviewed patches have been landed. Closing bug.
<rdar://problem/45977718>