It's not obvious from the logs (due to a test issue I'm fixing in bug 1777151), but the failing subtest is helper_bug1756529.html. This subtest has been suffering from various flakiness problems (e.g. it's failing on Linux) and it doesn't seem to me like a particularly high-value test (it's testing a fairly small code change that only affects non-default pref configurations). I'm going to move it into its own test group, and then we can probably disable it on platforms where it's very flaky.
Bug 1771836 Comment 14 Edit History
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It's not obvious from the logs (due to a test issue I'm fixing in bug 1777151), but the failing subtest is helper_bug1756529.html. This subtest has been suffering from various flakiness problems (e.g. it's disabled on Linux) and it doesn't seem to me like a particularly high-value test (it's testing a fairly small code change that only affects non-default pref configurations). I'm going to move it into its own test group, and then we can probably disable it on platforms where it's very flaky.
It's not obvious from the logs (due to a test issue I'm fixing in bug 1777151), but the failing subtest is helper_bug1756529.html. This subtest has been suffering from various flakiness problems (e.g. it's skipped on Linux) and it doesn't seem to me like a particularly high-value test (it's testing a fairly small code change that only affects non-default pref configurations). I'm going to move it into its own test group, and then we can probably disable it on platforms where it's very flaky.