Rollup of 9 pull requests Successful merges: - #105034 (Add example for iterator_flatten) - #105708 (Enable atomic cas for bpf targets) - #106175 (Fix bad import suggestion with nested `use` tree) - #106204 (No need to take opaques in `check_type_bounds`) - #106387 (Revert "bootstrap: Get rid of `tail_args` in `stream_cargo`") - #106636 (Accept old spelling of Fuchsia target triples) - #106639 (update Miri) - #106640 (update test for inductive canonical cycles) - #106647 (rustdoc: merge common CSS for `a`) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup