Revert #109075 to partially fix #114375#114988

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joboet wants to merge 3 commits intorust-lang:masterfrom

joboet:revert_tait_in_std

Commits on Aug 19, 2023

Revert "std: add auto traits to TAIT bound"
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Revert "std: use `LazyLock` to lazily resolve backtraces"
joboet
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std: make `LazilyResolvedCapture` unwind-safe to preserve #114331 after revert of #109075
joboet
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