Flaky libcxx test: thread.timedmutex.recursive/try_lock_until.pass.cpp #5899
Description
An MSVC-internal test run failed with:
Assertion failed: succeeded, file C:\repos\msvc\src\vctools\crt\github\llvm-project\libcxx\test\std\thread\thread.mutex\thread.mutex.requirements\thread.timedmutex.requirements\thread.timedmutex.recursive\try_lock_until.pass.cpp, line 88
// Try to lock an already-locked mutex for a long enough amount of time and succeed.
// This is technically flaky, but we use such long durations that it should pass even
// in slow or contended environments.It appears that the world 500ms is not enough.