Bug 188070

Summary:	Layout Test imported/w3c/web-platform-tests/streams/piping/error-propagation-backward.html is flaky
Product:	WebKit	Reporter:	Dawei Fenton (:realdawei) <realdawei>
Component:	Tools / Tests	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	lforschler, ryanhaddad, youennf
Priority:	P2
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Dawei Fenton (:realdawei) 2018-07-26 12:15:30 PDT

The following layout test is flaky on Mac (Release, Debug, WK1, WK2)

imported/w3c/web-platform-tests/streams/piping/error-propagation-backward.html

Probable cause:

Unknown, will attempt to repro locally.

Flakiness Dashboard:

https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=imported%2Fw3c%2Fweb-platform-tests%2Fstreams%2Fpiping%2Ferror-propagation-backward.html
--- /Volumes/Data/slave/highsierra-release-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/streams/piping/error-propagation-backward-expected.txt
+++ /Volumes/Data/slave/highsierra-release-tests-wk2/build/layout-test-results/imported/w3c/web-platform-tests/streams/piping/error-propagation-backward-actual.txt
@@ -1,4 +1,4 @@
-CONSOLE MESSAGE: line 12: Unhandled Promise Rejection: error2: error2!
+CONSOLE MESSAGE: Unhandled Promise Rejection: error2: error2!
 CONSOLE MESSAGE: Unhandled Promise Rejection: error1: error1!
 
 Harness Error (FAIL), message = error1!

Comment 1 Ryan Haddad 2018-09-13 18:38:40 PDT

Marked test as flaky on mac-wk1 and iOS in https://trac.webkit.org/r236000