179636 2017-11-13 14:42:40 -0800 fast/css-grid-layout/flex-content-sized-columns-resize.html sometimes fails, stderr claims that "ImageDiff crashed" 2017-11-27 15:50:16 -0800 1 1 1 Unclassified WebKit CSS WebKit Nightly Build Unspecified Unspecified NEW https://bugs.webkit.org/show_bug.cgi?id=178739 P2 Normal --- 1 jlewis3 webkit-unassigned ap jbedard rego ryanhaddad simon.fraser svillar zalan oldest_to_newest 1371083 0 jlewis3 2017-11-13 14:42:40 -0800 fast/css-grid-layout/flex-content-sized-columns-resize.html is a flaky image only failure on Mac OS High Sierra WK2 Release according to the flakiness dashboard: https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fcss-grid-layout%2Fflex-content-sized-columns-resize.html Build: https://build.webkit.org/results/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/r224770%20(1120)/results.html The diff on this test however comes up as null% first failure: https://build.webkit.org/builders/Apple%20High%20Sierra%20Release%20WK2%20(Tests)/builds/814 1372852 1 ap 2017-11-16 15:59:05 -0800 Matt, can you please check if the bot has ImageDiff crash logs? 14:06:43.960 48748 fast/css-grid-layout/flex-content-sized-columns-resize.html : ImageDiff produced stderr output: Error: test and reference images have different sizes. Test image is 600x600, reference image is 800x600 ImageDiff crashed 1375192 2 ap 2017-11-27 15:49:45 -0800 There are no ImageDiff crash logs on bot216. More detailed output: 10:54:42.112 11532 This test marked as a crash because of no data while reading stdout for the server process. 10:54:42.112 11532 This test marked as a crash because of no data while reading stdout for the server process. 10:54:42.112 11532 fast/css-grid-layout/flex-content-sized-columns-resize.html : ImageDiff produced stderr output: Error: test and reference images have different sizes. Test image is 600x600, reference image is 800x600 ImageDiff crashed 10:54:42.114 11532 This test marked as a crash because of a broken pipe when writing to stdin of the server process. 10:54:42.114 11532 ref test mismatch did not produce an image diff. Looks like the last time this happened was on November 15th. But looking at other bots, the problem seems to come and go.