Clone entire TokenCursor when collecting tokens
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Reverts PR rust-lang#80830 Fixes taiki-e/pin-project#312 We can have an arbitrary number of `None`-delimited group frames pushed on the stack due to proc-macro invocations, which can legally be exited. Attempting to account for this would add a lot of complexity for a tiny performance gain, so let's just use the original strategy.
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…as-schievink Rollup of 18 pull requests Successful merges: - rust-lang#78044 (Implement io::Seek for io::Empty) - rust-lang#79285 (Stabilize Arc::{increment,decrement}_strong_count) - rust-lang#80053 (stabilise `cargo test -- --include-ignored`) - rust-lang#80279 (Implement missing `AsMut<str>` for `str`) - rust-lang#80470 (Stabilize by-value `[T; N]` iterator `core::array::IntoIter`) - rust-lang#80945 (Add Box::downcast() for dyn Any + Send + Sync) - rust-lang#81048 (Stabilize `core::slice::fill_with`) - rust-lang#81198 (Remove requirement that forces symmetric and transitive PartialEq impls to exist) - rust-lang#81422 (Account for existing `_` field pattern when suggesting `..`) - rust-lang#81472 (Clone entire `TokenCursor` when collecting tokens) - rust-lang#81484 (Optimize decimal formatting of 128-bit integers) - rust-lang#81491 (Balance sidebar `Deref` cycle check with main content) - rust-lang#81509 (Add a regression test for ICE of bad_placeholder_type) - rust-lang#81547 (Edit rustc_typeck top-level docs) - rust-lang#81550 (Replace predecessor with range in collections documentation) - rust-lang#81558 (Fix ascii art text wrapping in mobile) - rust-lang#81562 (Clarify that InPlaceIterable guarantees extend to all advancing iterator methods.) - rust-lang#81563 (Improve docblock readability on small screen) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Reverts PR #80830
Fixes taiki-e/pin-project#312
We can have an arbitrary number of
None-delimited group frames pushedon the stack due to proc-macro invocations, which can legally be exited.
Attempting to account for this would add a lot of complexity for a tiny
performance gain, so let's just use the original strategy.