Automated Flaky Test Fixes #1523
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Introduced a mutex to serialize `sys::exec_impl::tests` that interact with the global process table. Tests like `test_sys_exec_disown_no_defunct` were failing when run in parallel with other process-spawning tests because they observed transient zombie processes created by concurrent tests. Verified the fix by running the test 50 times successfully.
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Summary
Previous Results
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Slowest Tests
🎉 No failed tests in this run. | 🍂 No flaky tests in this run. Github Test Reporter by CTRF 💚 |
Identified
sys::exec_impl::tests::test_sys_exec_disown_no_defunctas a flaky test.The root cause was a race condition where the test, which asserts that no zombie processes exist for the current process, would fail if another concurrent test spawned a process that momentarily became a zombie before being reaped.
Fixed this by introducing a
TEST_MUTEXusingonce_celland acquiring a lock in all conflicting tests withinsys/exec_impl.rs. This forces these tests to run sequentially, isolating their interactions with the system process table.Verified the fix by running the flaky test 50 times in a row without failure.
Also verified that Go and Web tests are passing.
PR created automatically by Jules for task 8584081842841595963 started by @KCarretto